CLASSIC | EDGE | FLEX
Discover the unparalleled performance and versatility of Door Engineering’s flagship door, the FF30 Performance Series model. Available in a range of window configurations and pre-engineered sizes, including 14’ wide x 14’ tall and 12’ wide x 14’ tall, our Four-Fold Doors deliver premium performance at exceptional value. Additionally, our FF30 Flex model offers the same window layouts and allows for customization of door size, accommodating dimensions up to 16’ wide x 16’ tall.
FEATURES
- Most reliable apparatus bay door on the market.
- Operators and components are designed and tested for over 1.5 million cycles.
- Reduced installation time.
- High speed opening in 7 seconds.
- Multiple window design layouts.
- Factory installed 1" insulated Low-E tempered glass for superior energy efficiency.
- Manual operation in power outage event.
- Designed to meet a maximum wind load of 120mph 3-second gust per ASCE7. Contact us for higher wind loads if applicable.
- Zinc coated sheeting for superior corrosion resistance.
- Select up to (4) rows of glass.
- Standard safety features including safety edges, photo eyes, presence sensor and torque sensing technology (UL325).

WINDOW LAYOUTS: FF30 CLASSIC — FLUSH PANELS
- Layout A - 4 Windows per Panel
- Layout B - 3 Windows per Panel
- Layout C - 2 Windows per Panel (Centered)
- Layout D - 2 Windows per Panel (High)
- Layout E - 1 Window per Panel (Mid-Low)
- Layout F - Solid
- Layout G - 2 Tall Windows
- Layout H - 1 Tall Window (Mid)
- Layout J - 1 Tall Window (High)

WINDOW LAYOUTS: FF30 EDGE — INSET PANELS
- Layout K - 3 Windows per Panel
- Layout L - 2 Windows per Panel (Centered)
- Layout M - 2 Windows per Panel (High)
- Layout N - 1 Window per Panel (Mid-Low)
- Layout P - 1 Window per Panel (Mid-High)
- Layout Q - 1 Window per Panel (High)
- Layout R - No Glass
- Layout J - 1 Tall Window

FF30 FLEX
The above window layouts are also available in custom sizes up to 16' wide x 16' tall.
MOUNTING CONDITIONS
Designed for multiple wall conditions, including:
- CMU
- Precast
- Steel
- Wood
OPTIONS
Finishes
- Select from standard RAL colors
- Or custom match a color
Sizes
- 14’ wide x 14’ tall
- 12’ wide x 14’ tall
- Available in custom sizes up to 16’ wide x 16’ tall
Standard Glass
- Pilkington Energy Advantage Low-E, Clear
Enhanced Glass Options
- Pilkington Energy Advantage Low-E, Solargray or Bronze
- Solarban 60 Low-E, Clear, Solargray or Bronze
- Solarban 70 Low-E, Clear, Solargray or Bronze
- SunGuard SN68 Low-E, Clear, Solargray or Bronze

Power Or Manual Operation
- 110-120VAC single phase
- 208-240VAC single phase
- 208-240VAC three phase
- 460-480VAC three phase
Additional Electrical Options
- Warning Strobe/Horn
- LED Red/Green Light Strips
- Loop Detector
- Additional Pushbutton Stations (Surface or Flush Mounted)
- Multi-Door Command Station (Open up to 6 Doors)

HORIZONTAL MOVEMENT
The Four-Fold door moves horizontally rather than vertically, this allows an apparatus to move quickly and safely.
As a result, the door is visible throughout the opening and closing motion allowing the driver to know the precise second the doorway is clear to exit.
It is common with overhead sectional and coiling steel doors for vehicles to begin driving through the door opening after losing sight of the bottom of the door, only to hit the bottom panel as the y move through the opening.
A collision of this type will make it impossible to operate the door (especially with telescoping and coiling steel doors, which cannot tolerate any denting or deforming of the slats).

MANUAL OPERATION
Manual operation is available with the Four-Fold door system. With the simple pull of a cord, manual operation is quick and easy. It requires no springs under tension, time consuming chain hoists, or heavy lifting.
SAFETY FEATURES
Standard features include:
- Fail-safe bump edges that sense obstructions that the photo eye and interior presence sensors may miss.
- Exterior light curtain photo eyes that provide continuous protection from the floor to 72” in height to sense both objects and personnel in that area.
- Torque sensing safety which is compliant with UL 325 safety standards
- UL compliant spacing between all panels and conventional pinch points
Optional features include:
- Center-mounted presence sensor that provides sensing of pedestrians with 3 independent sensing fields for opening and closing
- Audio/Visual warning beacon that provides a horn, strobe, and audible annunciator to provide warning prior to automatic closing and during the opening and closing motion.

MAINTENANCE
Standard preventative maintenance (PM) on Four-Fold doors includes applying grease to hinges and operators. With general yearly PM, Four-Fold door operators and components are designed to perform over 1.5 million cycles. Conventional sectional and coiling doors require constant spring and cable maintenance and replacement to keep them in safe working condition. Failure to keep up with costly PM on sectional and coiling steel doors can result in door failure, which can cause both damage to equipment and injury to personnel.