The custom-built, low-maintenance dual-panel door built for hangars that need a strong, reliable opening. All-steel welded frame and trusses, a double-strength hinge line, and doors that lift upward to save space in front of your building.
Two panels. One solid steel drive shaft. Zero compromises. Built by the manufacturer trusted by the U.S. Air Force, Navy, Marine Corps, and Coast Guard for over 40 years.
✓ Custom-engineered · ✓ Factory-tested before delivery · ✓ Meets local building codes
Max door size
Building doors
Dual-panel
Cable Safety Factor
Trusted on America’s most critical projects
For over 40 years, Well Bilt has been a leader in the Bifold hangar door market, building custom doors for aviation, military, and industrial facilities nationwide. We’ve perfected the Bifold door system.
Every Bifold door is custom built to your exact specifications, engineered to meet local building codes, with corners welded and ground smooth for a precise fit.
An all-steel welded frame and trusses withstand high winds, while a double-strength hinge line prevents sagging and adds strength to your building structure.
Request a quote and get detailed drawings and pricing back within 24 hours.
Trusted by the U.S. Air Force, Navy, Marine Corps, and Coast Guard on critical facilities nationwide. Every door is factory tested before delivery, with a recorded test of installation, maintenance, and operation.
A Bifold hangar door is a dual-panel door that lifts upward on a solid steel drive shaft and cable system, hinged along a double-strength center fold line. Because the panels fold and lift together, it requires very little side or head room, seals tightly against the weather, and adds strength to the building structure through its all-steel welded frame and trusses. Well Bilt builds Bifold doors to order, up to 90' wide and 30' tall, custom built to your exact specifications.
A Bifold door is the right call when you need a strong, proven opening with minimal side or head room and reliable, low-maintenance operation.
Custom-engineered openings up to 90' wide and 30' tall, with a tight seal that helps keep out air, bugs, and rodents.
Trusted on Air Force, Navy, Marine Corps, and Coast Guard installations.
Precision-built, code-compliant doors engineered for industrial facilities nationwide.
A proven choice for homeowners and small commercial tenants, with the same all-steel construction and reliable operation as Well Bilt's larger doors.
The most common question buyers ask. Here’s the honest trade-off, then go deeper in our comparison guides.
| Factor | Bifold | Hydraulic | Rolling / Sliding |
|---|---|---|---|
| How it opens | Folds in half, vertically | Swings out & up, one piece | Slides horizontally on track |
| Headroom / clear opening | Slight loss at fold | Full height, no loss | Full height |
| Space needed in front | Minimal, park close | Needs clearance to swing out | None in front (needs side wall) |
| Moving parts / maintenance | More (cables, straps, hinges) | Fewest, lowest upkeep | Tracks & rollers to maintain |
| Weather seal / insulation | Good with modern seals | Best, one-piece seal | Good |
| Upfront cost | More budget-friendly | Higher | Varies with size |
| Best when… | Space is tight or budget is key | Uptime, weather & clearance matter most | No room to swing or fold |
Two-button constant-pressure controls, press Open or Close, release to stop. One of Well Bilt's simplest large doors to operate.
Rated among Well Bilt's most reliable systems, with heavy-duty 2 HP+ motors, oil-bath gear reducers, and hinges tested to withstand 15,000 lbs of tension.
Heavy-duty hinge pins tested to 15,000 lbs, floor lock pins, and a keyed lock-out on every control station keep the door secure.
A tight seal against the building limits air loss and keeps bugs and rodents out, with good insulation options and doors that shed water in the open position.
Built to your exact opening, framed true to within 1/8" in 20', and engineered to meet local building codes.
Constructed to comply with all applicable codes and specifications at the time your order is placed.
Real Well Bilt Bifold Hangar installations, military, marine, agricultural, and industrial.
Every Bifold door is driven by a solid steel drive shaft running the full width of the door, powered by a heavy-duty 2 HP+ motor and gear reducer with an electric brake that holds the door at any position of travel. Standard voltage is 230V single-phase, with 208V or 230/460V three-phase available.
Doors are controlled by two-button (Open/Close) or three-button (with Stop) constant-pressure stations — release the button and the door stops instantly. All control stations use a keyed lock-out to prevent unauthorized operation, and lift cables are galvanized steel aircraft cable sized for a minimum safety factor of five.
All the detail you expect, organized and scannable. Available as a stamped submittal on request.
Pre-hung frame in ASTM A500 Grade B welded square/rectangular steel tubing, minimum 11-gauge wall, min. yield 46,000 psi. Exterior corners mitered at 45° and welded on four sides, except the bottom corners where guide rollers are installed. Framing true to within 1/8″ in 20′.
A solid steel drive shaft runs the full width of the door, driven by gear reducer(s) through a dual chain drive system, supported by bearing mounts with zerk fittings at each cable drum. Lift cables are 3/16″ or 1/4″ galvanized steel aircraft cable, sized for a minimum safety factor of five. Drive motors are heavy-duty 2 HP or larger TEFC type, standard 230V single-phase with 208V or 230/460V three-phase optional, paired with an electric brake that holds the door at any position of travel.
Bifold doors don’t use hydraulic valves or lines at all, they run on a mechanical cable and drive-shaft system. You may want to rename this section. If so, here’s the equivalent content: Cable drums are welded steel tubing with end caps secured to the drive shaft. Limit switches are factory preset based on the number of drum turns needed for the desired clear opening, with over-travel limit switches as a safety backup.
Heavy-duty hinges are factory-welded, with quantity and location varying by door size and wind load. Fabricated with 3/4″ diameter pins tested to withstand 15,000 lbs of tension loading; top and center hinges are pre-lubed for life. Floor lock pins are 1″ diameter cane bolts that engage 1-3/4″ steel-sleeved holes in the concrete floor with a minimum 3″ penetration, operated through a single-handle locking system with an electrical interlock.
Doors seal tightly against the building to limit air loss and can be insulated to a specified R-value. Anti-sail lugs on the bottom guide rollers prevent the door from lifting under negative wind pressure. Every system is factory tested prior to delivery. Testing is video recorded and covers component, installation, maintenance, and general operation. Doors are constructed to comply with all codes and specifications in effect at the time of order.
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A solid steel drive shaft and dual chain drive system raise the door’s two panels, which fold along a center hinge line and lift upward together. The operator can hold the door at any point of travel and stops instantly when the control button is released.
Up to 90′ wide and 30′ tall, custom engineered to your exact opening.
Bifold doors are built for low maintenance. Top and center hinges are pre-lubed for life, and drive shaft bearing mounts use zerk fittings for easy servicing.
Very little. Bifold doors lift upward and fold rather than swinging out, saving space in front of your building. They also require very little side or head room.
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