2770 Dillard Road, Eustis, Florida 32726
+1 866 226 3667

Door Framing

Intended design wind speed for our hangar door is per local code. Primary and secondary framing of hangar door, upper guide rail assemblies shall comply, where applicable, with loads and specifications in accord with latest American Institute of Steel Construction Specifications of Standard Structural Sections.

Hangar Door jambs shall be hot rolled structural channels per ASTM specification A36. Deflection at maximum wind loading to meet architects requirements.

Door girts shall be either cold formed or hot rolled structural tubing per ASTM A-500 Grade B, properly spaced to accommodate specified wind load conditions as required. Design girts for simple span conditions and size to permit exterior and interior sheeting and blanket insulation without causing jamb seal interference, abrasion or wear.

Upper Guide Rail System

Upper guide rail shall be a wide flange “I” beam shape and shall conform to ASTM Specification A-36 or better. Size, weight and length shall be as required for door design, wind loads and building requirements. Bottom flange of the upper guide rail shall act as a retainer in conjunction with upper guide roller assemblies so as to prevent doors from accidental disengagement. Web of rail shall be sized to accommodate building deflection, permitting unopposed operation of doors under maximum live load conditions.

Upper Track brackets shall be wide flange beams, supporting upper guide rails on a maximum of 10′-0″ centers. These are typically provided by metal building.

Closure plate shall be 14 gage galvanized steel sheets sandwiched between guide rails and track brackets so as to act as a soffit, a diaphragm to help distribute tributary wind loads of doors into building structure, and as a flat surface at the top door seals.

Bottom Rail System

Anchor bolts shall be suitable for use intended with double nuts for leveling bottom rail supports. Anchor bolts and nuts shall be ASTM Specification A307.

Rail supports shall be factory cut to size and punched hot rolled angles of a minimum yield strength of 36,000 psi for leveling and supporting bottom rails to prevent movement during normal erection, concrete pouring and finishing operations.

Bottom rail shall be ASCE specification rail (Size, weight and length shall be as required for door design and wind loads) of proper weight to accommodate design, thrust and weight loads for each specific installation.

Bottom Rollers

Each wheel shall be steel, minimum A-36, and of adequate size (size, weight and length shall be as required for door design and wind loads) to be easy rolling and designed to withstand all radial and thrust loads imposed by dead loads and wind pressure on the door. We do not use “V” groove or caster type wheels.

Upper Guide Rollers

There are two types of upper guide rollers; fixed or telescoping.

Fixed Type:

Fixed rollers offer a fixed +/- vertical deflection in the door.

The fixed upper guide roller assemblies are in pairs at both ends of each door panel with polyurethane rollers, operating perpendicular to web of upper guide rails. Rollers shall have permanently lubricated bronze bushings.

Telescoping Type:

Telescoping  rollers offer a customizable +/- vertical deflection to accommodate live load in the building.

The telescoping upper guide roller assemblies are in pairs at both ends of each door panel with horizontal polyurethane rollers, operating perpendicular to the web of upper guide rails. Rollers shall have permanently lubricated bronze bushings. Roller assembly is mounted on a structural pipe which will slide vertically on teflon bushings so as to accommodate for building movement due to live load.

Motor Operators

There are two types of motor operators; rubber tire or in frame.

External Motor Operator

An electric motor drive with a pneumatic tire which is mounted outside of the leading door panel(s), covered by a hinged covered door. We commonly call these are “rubber tire operator”.

The non-powered door panels will be interconnected to the powered door section by means of steel pick up brackets. The pick up brackets will be bolted onto the leading and trailing edges of the door panels.

In Frame Motor Operator

An electric motor drive system which is mounted inside of the leading door panel(s), covered by a hinged covered door.

The non-powered door panels will be interconnected to the powered door section by means of steel pick up brackets. The pick up brackets will be bolted onto the leading and trailing edges of the door panels.

The drive unit is a unitized assembly, consisting of a totally enclosed fan cooled motor, right angle worm gear box, overload and emergency disconnect and necessary roller chains and sprockets. Designed to move powered leaf at a minimum speed of 45 feet per minute at zero wind load conditions; operable at full speed up to and including a maximum wind load of eight (8) pounds per square foot.
Motor: Single speed, squirrel cage type of sufficient size to operate the leaves at not more than 75 percent of rated capacity.

Drive bases: Drive bases shall be adjustable and shall be designed to rigidly support drive components without deflection or torsional rotation under operating loads.

Variable frequency drive: (VFD) shall produce an adjustable-frequency, adjustable-voltage, pulse width modulated (PWM) three phase, 480V, sine wave output when powered from a three-phase, 480V, 60Hz input. The drive shall be suitable for use with NEMA Design B, ac induction motors with a 1.15 service factor. Alternate adjustable frequency drives techniques other than PWM technology will not be considered. Drives shall be designed, constructed, and tested in accordance with NEMA, UL, NEC, and IEEE standards. Drives and all supplied options shall be UL approved and listed according to UL 508. Drives shall be solid state, electronic and programmable for time and value of motor speeds and shall maintain constant torque characteristics over the motor speed range. Drives shall be factory wired, with overload and under voltage protection, equipped with electrical interlocks and with transformers and relays for control circuits, all enclosed in a (NEMA 4, wet location) enclosure with a disconnect switch, capable of being locked in the OFF/OPEN position. Power voltage shall be 460V, three-phase and control voltage shall be 120. One complete variable frequency drive will be provided for each power operator.

Limit switches: Polarized reflex sensors which have both a light source and detector in the same unit. The sensors feature visible red sources to aid in alignment of the sensor with its retro-reflector.

PLC or smart relay: A programmable relay which will allow the hangar doors to start from a full closed position and run at half speed for 2.5 feet, then ramp up to full speed. At 2.5 feet from full open position, doors are to ramp down and run at half speed before stopping.

Warning bell: Volume of not less than 90db installed on the powered leaf of hangar door system. The warning device shall automatically signal movement of the powered leaf and shall sound continuously while door is being operated.

Overhead trolley duct system or SO cable will provide power to the door operator(s).

Weather Seals

Weather seals shall be 2-ply fabric reinforced neoprene rubber designed to provide a weather tight door seal around the entire perimeter of the door when the doors are in their closed position. Spaces between and around each door leaf, jamb, head and still shall have seals mounted on exterior side of door center line to help resistance from penetration of rain, snow, sand and dirt.


Hangar door shall have a 5-year structural warranty against all defects in material and workmanship.

All electrical components shall have a standard 1-year warranty against all defects in materials.

Paint & Coatings

Hangar door framing members shall be thoroughly cleaned removing loose scale, dust, or other objectionable materials which would otherwise interfere with bond of paint with steel.

All steel shall be cleaned and coated with one coat of primer. 

All shop painting will be done in dry weather, under cover, and free from moisture.


Safety Edge

We can provide fail–safe safety edges on each leading edge of the hangar door.  Actuation of the safety edge on leading edge of a group of leaves shall stop movement of the group. Actuation of a safety edge shall lock out the motor control in the direction of travel until reset, but shall permit the door to be reversed away from the obstruction which tripped the safety edge. Safety edges shall be alive only when doors are moving. Safety edges shall be reset by moving doors away from the obstruction.

Sensing edges made of reinforced polyvinyl chloride cover or other Government-approved material with chemical resistance to diesel and JP-4 fuel, hydraulic fluids, SAE-30 oil and salt water.

A cover that provides hermetic seal for weather and moisture resistant protection of internal foam and contact elements. Internal foam may be polyurethane and/or latex foam per military specification MIL-R-5001, medium density. Two contact elements separated by perforated foam or other Government-approved materials and design to perform the switching function when the sensing edge encounters an obstruction along any portion of its active length.

Walk Door – Framed Opening Only

A 3070 framed opening will be provided with a step over, unless specified as an ADA access point.

Includes a limit switch to prevent the hangar door from operating if the walk door is ajar.

Tail Door System

Increase the clear opening height without raising the eave height of your aircraft hangar. Tail doors can be implemented in to new or existing building structures.

Cable System

Each group of door leaves shall be interconnected so that they all start to move at the same time and arrive at the fully opened or fully closed positions simultaneously.

The cable system shall be of the horizontal type consisting of a horizontal cable mounted on sheaves that pass through the interior of the door leaves or wrap around the door leaves. The system shall be so designed that the cables may be pre-tensioned prior to the application of operating loads. Cables shall be so reeved that they can readily be disconnected and removed for replacement.

AeroDoor Employees

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Specifications on this page provided as an example only and are subject to change without prior notice.
For the most up to date specifications always refer to your latest dated proposal from AeroDoor International.