Know What a Door Lintel Is and The Role It Plays at the Overhead Door Opening

Knowing what a door lintel is and its function can be very useful when the need arises to install a new overhead industrial door on an existing facility. The primary purpose of a door lintel is to provide support for the wall above the door opening. The door lintel is a load-bearing beam that supports the opening in the framing where the door will be installed. The door lintel is a horizontal beam fitted across the top of the door opening to support the bricks or structure materials above the door.  Typically, lintels are made from steel or prestressed concrete. Steel lintels are normally used when the door openings are extensive and are a popular choice due to their strength, durability, and versatility. The lintel material used will depend on the structure of your building. Either side of your lintel must be supported sufficiently to ensure the above load is distributed evenly on both sides.  MAXDoor designs and builds custom under lintel (UL) vertical lift fabric doors up to 65 Feet wide.

Door Lintel

MAXDoor Standout Features

  • The simple MAXDoor design ensures minimum operation and maintenance costs.
  • Head members and side frame guides utilize structural steel components that provide overall strength.
  • Horizontal beams are manufactured to provide the highest wind load capacity.
  • Fabric choices include a variety of materials for special environments including high temperature, cut proof and anti-static.
  • MAXDoor offers a variety of control panel types to fit specific door requirements.

MAXDoor Speed

  • 10-12 inches per second
  • Faster Operating Speeds are available.

MAXDoor Strength

  • Horizontal beams spaced for 20-psf wind load. High wind load capacity available
  • 22oz Heavy duty PVC Fabric in a variety of colors
  • Tube size UHMW guide blocks.

MAXDoor Safety

  • A minimum for 4 lifting belts and a maintenance safety switch
  • Photo eyes for monitoring openings and closings
  • Manual brake release at motor location
  • Main shaft auxiliary brake system
  • Over travel protection
  • Wireless reversing edge

Talk To An Engineer Today

If you would like to talk to a seasoned pro in the industrial door industry about your particular application, call us today at 248-915-5838 or contact us and we’ll be happy to help you.

MAXDoor Saves Shop That Had Doors Ripped Off From Tornado

The Challenge

A tornado tore through a mining truck shop in the western United States. All existing seven doors were ripped away and destroyed leaving behind only the side framing.  The doors that needed to be replaced must handle a high wind load and have superior overall strength.  In addition, the customer wanted natural light to come through the doors to enhance the shop’s safety factor and improve working conditions. The vertical lift fabric MAXDoor was chosen for the door replacement.

The Solution

Design, build and install the MAXDoor UL model vertical lift fabric door with white fabric allowing more light into the shop.  Made with aluminum rectangle tube horizontal beams, this model provides the highest wind load resistance.  These high strength beams do not twist under load like other extruded beams. An affordable door option and a long service life.  MAXDoors are designed to utilize existing steel framing resulting in a faster installation.  In addition to a dual layer 4-6-inch-deep curtain, a weather seal is provided on the interior and exterior sides of the door guides.  Unlike the single layer fabric or rubber doors that blow into the shop, this is a door for harsh conditions.  The fabric overlaps the door guides by almost 2” per guide so there is very little leakage.  When the wind blows, the weather seal gets tighter.

The Results

Following the installation of MAXDoors on the customer site, they now get to enjoy the following:

  • Service life of a MAXDoor is 20-25+ Years even in a toxic and corrosive mining environment
  • Installation is quick and efficient as MAXDoors are built with the installer in mind
  • No springs in MAXDoors means low maintenance and service call savings
  • Very High Wind Load capability
  • Doors do not blow into the shop and that saves floor space for equipment and improves safety
  • A very satisfied customer!

Get Help From Knowledgeable Experts

If your shop is in need of the best industrial doors, then now is the time to explore how the vertical lift fabric doors from MAXDoor can be customized for your particular application.  Contact us today or call 248-915-5838 to speak with the experts today!

MAXDoor – The Industrial Door Pros

A wide variety of businesses can benefit from installing a MAXDoor at their facility. It is the perfect solution for reliability and long-life. The Vertical Life Fabric Door is a great door application for industries such as aerospace, aviation, mining, farming, storage warehouses, distribution centers, waste management and more.  A MAXDoor is self-supporting, can be installed on the interior or exterior wall, and puts a minimal load onto the existing building.

A Door That’s Built To Last!

Business owners’ profit when they buy a MAXDoor!

  • MAXDoors have a service life of a million cycles and will provide 20-25 years of service.
  • MAXDoors have a high wind resistance and a high wind load rating.
  • MAXDoors operate at high speed and are easy to service – no springs to wear out.
  • MAXDoors have a weather-tight seal and hold up in caustic, wet and dirty environments.
  • MAXDoors have multiple lifting belts making it much safer than spring counter balanced doors.
  • MAXDoors are offered in a variety of fabric materials such as fire retardant, low temperature, high temperature, anti-static and more.

MAXDoors stand strong even during door collisions!

  • MAXDoors operate like a roman shade allowing the weight and wind load to be transferred from the traveling door panel into the door guides at every horizontal beam.  When a collision occurs, and the door is knocked out of the door guides, the fix is quick. Simply place the horizontal beams back in position, and the door is back in operation.  No downtime and no costly service calls!

With a MAXDoor You Have Options

  • Model WD – economical, high wind or pressure resistant and long service life
  • Model SD – simple design, 10-12” per second speed both directions, 4” thick door panel and R-value of 4.5/U-value is B
  • Model HD – designed for large openings and touch environments, side frames use C-15 steel channels for superior strength
  • Model TD – telescoping steel panel door system – a solution to security and space allocation, latches down when closed, powered or manual operation
  • Crane Way Door System – lower door swing, custom door controls for any application, structural steel head member, side frames and door guides.

See more MAXDoor products  at

As you can see, MAXDoor can deliver to your specific industrial door needs. Custom designed and custom built, the MAXDoor engineers offer over 30 years of experience in the vertical lift fabric door industry.  A simple door with great flexibility built right here in the USA.

Contact Us

To speak with one of our experts about your industrial door application, please call 877-436-0302 or contact us today!

Highly Rated and Affordable Vertical Lift Fabric Doors

Enhancing Dependability, Energy Efficiency, Safety and Service Life

Why Vertical Lift Fabric MAXDoors are becoming the preferred industrial door for a diverse range of industries including warehouses, distribution centers, repair shops, fire stations, loading docks, agricultural facilities, manufacturing facilities, automotive facilities, shipyards, hangars, and aerospace:

Wind Load

Our doors can be designed and built for a maintained wind load of up to 150 m.p.h. The higher the wind load, the more robust and heavy duty the door components.


MAXDoors put a minimal amount of additional load onto the building and are designed to be installed on the interior or exterior side of a wall.

Minimal Service Calls

Collisions happen but with MAXDoor the repair is fast and simple due to the durable parts and flexible design.  There are no springs on the door.  Our door has a 4” or 6” thick traveling fabric panel. The door guides are free of Lifting belts or devices that get trapped in the door guides. If MAXDoor is knocked out of the door guides, simply place the horizontal beams back in position and the door is operational.

Strength and Speed

MAXDoors are stronger and less expensive than large rolling steel or rubber doors and operate at a higher speed.  The door guides are made of steel angle. The Side Frame Steel normally an option with other manufactures is included and standard on MAXDOORS.  The door is designed for high cycle applications (hundreds of cycles per day).  Aluminum Rectangle Tube horizontal beams provide the highest wind load resistance.  Additional strength is provided by using high strength Aluminum Rectangle Tubes that do not twist under load like other extruded beams.

Affordable with a Long Service Life

With a 20-25-year service life, and low annual maintenance cost, MAXDoor is a great return on your investment.

Energy Conservation

With a dual layer 4- 6 inch deep curtain a weather seal is provided on the interior and exterior sides of the door guides. With the fabric overlapping the door guides by almost 2” per guide there is very little leakage at the door guides. When the wind blows the weather seal gets tighter. The material is all one piece so when the door is closed there are no seams or joints for the wind to penetrate the door panel.  At the bottom of the door there is a large 1/8” thick EPDM Rubber seal to keep the weather and rain out. Our 3-piece bottom weather seal design minimizes tearing and is easy to replace small sections.


Safety on MAXDOOR is number ONE! Our doors use multiple Lifting belts (minimum 4) to make sure a door does not come down should a belt break. We do not rely on a mechanical device in the door guides to hopefully work when the one and only belt breaks. The door is protected by an over travel limit switch and a manual maintenance switch in the head member. Industrial Thru-beam Photo-eyes are provided for additional safety. Maintained contact close push button operation is standard on all doors. A wireless reversing edge is standard on all doors. The Wall Mount Control Panel is provided with a lockable fused rotary disconnect.

Made in the USA

MAXDoors are made in the USA.  Contact us to speak with our team about the right door for your particular application or call us directly at 877-436-0302.

MAXDoor Meets the Challenge for Corrosive-Resistant Mine Doors

Indeed, the mining industry can be extremely challenging with factors such as dirt, harsh weather conditions, and the presence of large trucks and land moving equipment.  In such environments, it is important to have durable and reliable doors to quickly close up the outside and inside conditions.  MAXDoor, a vertical fabric lift door, is designed to meet the challenges of corrosive environments.

The Challenge

MAXDoor was presented with a situation requiring the replacement of rolling steel doors at a mine site.  The steel doors were allowing air from toxic environments to leak in and around the doors causing corrosion.  The steel doors were also involved in numerous accidents involving large vehicles entering and existing the entrance to the mine. This resulted in significant down-time, high door repair bills and lower productivity.  The challenge was to design and manufacture vertical lift fabric doors that would alleviate the daily operational problems.

The Solution

To make sure the solution matches the challenge, MAXDoor always takes a personalized approach to the design and manufacture of custom Vertical Lift Fabric (VLF) doors. In this situation, a premium door is needed to handle the daily operations in mining wash bays, crusher buildings, pellet plants, and truck repair shops. MAXDoor offers the following features to ensure your mine and mining equipment is offered full protection from harsh temperatures and high winds:

  • Custom designed door sizes that are built-to-suit for just about any application
  • Minimum load on building structure – Self Supporting
  • High positive and negative wind resistance
  • Excellent environment separation
  • High speed operation
  • No springs or counterweights
  • Designed for heavy industrial environments

The Results

The fabric door is constructed with materials that can withstand harsh conditions and can effectively protect against dust, moisture, and other elements.  MAXDoor’s robust construction and advanced features make it suitable for use in mining facilities where durability and reliability are crucial.

  • MAXDoors simple design has horizontal traveling beams constructed to flex and give way when there is a collision. The mining industry uses large industrial equipment daily and having the right door in place will be beneficial when the door is hit. Real life collisions prove that the horizontal beams flex out of the door guides without damage and are easily put back into the door guides saving hours of downtime and repair costs.
  • Made in the USA, MAXDoor is 2-3 times faster than rolling steel or multiple leaf steel vertical lift doors and will substantially reduce annual operating and maintenance costs.
  • MAXDoors enhance safety and productivity at the mine site.
  • 20-25 Year service life

Learn More About MAXDoors

If your mining facility is experiencing corrosion on its industrial doors, then it’s time to explore a solution that can deliver corrosion-free doors and much more.  Contact us today or call (877) 436-0302 today.

Go With A MAXDoor Solution For Your Cleanroom

Doors for cleanrooms are a crucial aspect to the design of specially built environments. A cleanroom is a “room within” with an engineered space that maintains a very low concentration of air borne particulates.  These rooms are constructed and operated in a manner to control the introduction, generation, and retention of particles inside the room. These rooms are well controlled for containment and actively cleaned to provide the cleanest area possible.  Securing the right curtain/door in this situation is critical to the overall operation of a cleanroom.

The Best Industrial Doors for Cleanrooms

MAXDoor offers a wide range of reliable curtains and doors for cleanroom spaces.

  • The one-piece curtain minimizes air infiltration when the door is closed.
  • The curtain overlaps the door guide by approximately 2” on each side of the door resulting in dual side seals.
  • The dual layer fabric also minimizes air infiltration.
  • There are no door hinge points to allow air infiltration.
  • There are no sections of joints in the panel – the door is a solid seal.
  • If a cleanroom is under positive pressure, the air pressure creates a tighter seal at the door guides.
  • Alternate fabric choices are available for various types of special environments.

MAXDoor Industry Applications

MAXDoor provides curtains and doors for cleanrooms in all types of industries:

  • Pharmaceutical & Nutraceuticals
  • Laboratories & Research Facilities
  • Hospital & Healthcare Facilities
  • Food Industries
  • Biotech
  • Medical Cannabis
  • Sustainable Energy Supplies
  • E-Liquid Vape
  • Aerospace

MAXDoors are durable, strong, safe, and easy to operate. Our curtains and doors are the perfect solution to maintain the quality of a cleanroom.

Made in the USA

MAXDoors are made right here in the USA.  If you would like to explore how a MAXDoor can make an impact at your facility contact us or call 877-436-0302.

Industrial Doors for Highly Toxic Waste Handling Environments

The Challenge

A facility in Texas needed a door solution that would separate outside elements from the interior temperature controlled building.  It was very important that environment separation be maintained for air quality, noise control, dust and rodent control. In addition, the door was critical  in maintaining compliance with local and state regulations. The door also needed to be very durable and operate at a high speed for a 24/7 operation.

The Solution

A vertical lift fabric door – a MAXDoor – proved to meet all of the door requirements of the waste handling facility for these reasons:

  • MAXDoors tolerate a very corrosive environment
  • Greatly improve protection from toxic air
  • The door has a tight seal when closed
  • Minimal downtime when collisions occur
  • Simple design = simple repairs
  • Fabric choices

The Results

  • A better temperature-controlled facility
  • Durable door to match any challenge
  • Fabric Choices include various weights, colors, fire retardant, low/high temperature, anti-static, etc.
  • Minimal repair costs and downtime – when collisions occur beams flex and give way. Beams are easily put back in place
  • Improved safety at the door – the lifting belts and horizontal beam design have proven to increase personal safety when collisions occur.
  • 20-25 Service Life

Learn More

To learn more about how a MAXDoor can help your facility to become safer and reduce its overall energy costs, contact us.

EV Battery Factories Teaming with MAXDoor

Known as the battery belt, it is the geographic region that roughly runs between Michigan to Tennessee to Georgia to western New York. EV battery factories are being built and specific industrial door requirements need to be met. Lithium, nickel, and cobalt are the key materials used to make EV batteries. Inside the plant proper conditions must be maintained for hazardous material handling, clean rooms, and dry rooms.

MAXDoor can provide a strong, reliable door at the entryway of your facility and can also provide the doors inside for clean rooms and dry rooms. There are many choices for industrial doors but let’s take a look at the door that is revolutionizing the door industry.  MAXDoor is a vertical lift fabric door that provides intelligence at the door opening.

MAXDoor offers smart features that will save your facility time and money in addition to addressing safety concerns at your EV battery plant.  MAXDoor is built to take the guess work out of operating your industrial door.  With a 25 year service life, MAXDoors operate at high speed and are built to run 24 hours a day and 7 days a week.

  • Intelligent controllers defend against human mistakes. Automated door opening/closing systems eliminate error and improve safety and productivity.
  • MAXDoor provides excellent environmental separation for clean and dry rooms resulting in tightly sealed off areas.
  • HVAC system overuse will be diminished when MAXDoors are installed. The design and built of our door minimize the energy required to heat or cool factories with large door openings. Energy loss at the door opening is reduced with controllers that are programmed to speed up or slow down the door.
  • MAXDoors experience minimal downtown due to the design of the door. If a door is hit, the lifting belts and horizontal beam design allows for simple maintenance, and the door is operational within minutes.
  • MAXDoor is made with structural steel components and provides overall strength and durability.  Our doors are designed with overlapping fabric at the door guides and door bottom providing a tight seal and a very energy efficient door solution.
  • MAXDoor safety features are above door industry standards and will stand the test of time.

MAXDoor is 100% American owned and our door is manufactured in the state of Michigan. This means we can design, build, and deliver a door much faster than our overseas competitors. With over 30 years in the door business, our engineers will design a state-of-the-art industrial door for your battery facility.  To learn more about how we can help you, please contact us.

MAXDoor Is The Perfect Fit for the Mining Industry

MAXDoors are vertical lift fabric overhead doors that are designed for heavy industrial, dirty environments.  The doors are easy to install, maintain smooth operation, provide excellent environment separation, and are designed for low maintenance.

In years past, the mining industry used big steel heavy doors. They were expensive, outdated, and unsafe.  Enter MAXDoor – a fabric door that fits in less space and can be installed without modifying the existing doorway or building.  A fabric door vs. a steel door allows sunlight to enter increasing safety at the mine.

How MAXDoors Benefit the Mining Industry

  • MAXDoor provides intelligence at the door opening.  You want a door that can take a hit and continue operating with minimal downtime.  MAXDoor takes the guess work out of operating your overhead door and that greatly increases the safety factor.
  • MAXDoor creates a safe opening for trucks loaded with iron ore that are driving in and out of the crusher building. When closed the door creates a great barrier from flying rock, debris, and extreme weather conditions.
  • This is an affordable door with a service life of 20-25 years.
  • MAXDoor is located in the USA in the state of Michigan.  With over 35 years of experience in all sectors of business, let our overhead door experience work for you!

To learn more about how a MAXDoor can help optimize the efficiency at your facility, contact us today!

Custom Made Vertical Lift Fabric Doors

Need a custom-built door to fit an unusual door opening?  MAXDoor offers a wide variety of doors that can be designed and built for your specific door needs. Our doors are built for the toughest of industrial environments and come with custom door controls for any application and environment. The 22-ounce PVC fabric used to build MAXDoors comes in a large selection of colors and is UV stabilized, mold & mildew resistant.

Examples of Vertical Lift Fabric Door (VLFD) Choices and Applications

  • VLFD’s for Warehouses – types of applications: Warehouses, Maintenance Shops, Truck Doors, Water Treatment Facilities, Composting, Agriculture and Chemical facilities
  • VLFDs for Entrances 40 Feet or Less – types of applications: Waste Handling, Steel Mills, Aerospace, Manufacturing, Automotive and Utility facilities
  • VLFDs for Entrances OVER 40 Feet – The Model UL-XL – Custom built for very large door openings
  • UL and XL-UL VLFDs – fabric choices include a variety of materials for special environments including high temperature, cut-proof and anti-static.

These are just a few of the custom-built doors offered by MAXDoor. We have the experience and skills to engineer, design and build a door to meet your specific requirements.

Other outstanding features of MAXDoors include:

  • Heavy Duty Operators
  • Soft start/stop motor control
  • Opening speeds up to 60” per second
  • Bottom beam reinforced with EPDM floor weather seal
  • High cycle lifting belts
  • Custom made wall-mounted control panels
  • Horizontal beams space for high wind resistance
  • Service life of MAXDoors – 20-25 Years
  • Made in the USA

To learn more about how a MAXDoor can help your facility, please contact us.