Heavy Duty

Heavy Duty Steel Rolling Service Doors

The Heavy Service Duty door provides high security and durability offering years of maintenance free performance. Many options are offered with this model from perforated slat to the inclusion of a pass door or grille section.

All doors are designed to withstand up to 80 mph winds and can be upgraded for more severe weather conditions. Curtains can be ordered in standard grey or in tan with contrasting black guides and footpiece. A galvanized steel finish is also offered providing the look and protection of stainless steel without the cost.

Heavy Duty Steel Roll-up Service Door Features

Heavy Duty Steal Coiling Service Door Options

Increased Windload Capacity: curtain designs to withstand wind loads exceeding 20PSF

High Cycle Construction: designs to provide up to 150,000 operating cycles or maximum possible in design

Perforated Slats: 3/64″ diameter holes on 5/64″ staggered centers in type 25 slats provide 30% open area for ventilation and visibility throughout the curtain

Extruded Aluminum Curtain Type 24ET: Optional thick-line, 11 gage extruded aluminum slat for exceptional corrosion resistance, durability, strength, and beauty. Available in standard mill finish or optional anodized clear or bronze for architectural needs.

Extruded Aluminum Curtain Type 24ES: Optional slim-line, 15 gage extruded aluminum slat for exceptional corrosion resistance, durability, and beauty. Lightweight design for use on service doors up to 16; wide. Available in standard mill finish or optional anodized clear or bronze for architectural needs.

Vision Lites: single or multiple 3″ wide cutouts, open for ventilation or covered with acrylic

Intermediate Grille: partial grille curtain connecting type 30 slats above and below

Sloped or Stepped Footpiece: for special sill conditions

Cylinder Locks: on footpiece or guide

Pass Door: 3′-0″ x 6′-8″ hollow metal door in a steel frame for access through the curtain when closed; frame is hinged to guide and swings clear to allow use of entire door opening when curtain is raised; handicap option, custom sizes, window and special hardware available

Galvanized Finish: on footpiece, guides, brackets and barrel

Safety Bearing: This unique safety device functions as both a bearing and inertia brake for motorized service doors and grilles. The safety bearing is designed to prevent the curtain from free-falling if there is damage to or failure of the motor operator, drive chain or spring assembly. If a malfunction occurs and the downward speed increases to an unsafe rate, the inertia brake absorbs the added energy and safely stops the load.

Powdercoat Finish: a durable and decorative finish for steel or aluminum surfaces. It provides longer life and requires less maintenance than a standard finish. Powder coating is available in a variety of colors for use on many products. Consult factory for color selection, applications and limitations

Heavy Duty Steel Door Model Designations

By Method of Operation – Face of Wall Mount

DFP – Push-Up
DFC – Chain
DFT – Thru-wall chain
DFA – Awning Crank
DFB – Crank Box
DFM – Motor

For Between-Jamb Mount, change letter ‘F’ to ‘J’

Heavy Duty Steel Door Slat Options

Type 30 Large Curved Slat

Standard curved slat for use on all service doors where strength and durability are a consideration. Available in 24, 22, 20, or 18 gage galvanized steel. Also, for use on all fire doors

Type 20 Small Curved Slat

Optional curved slat for use on service doors to 16′ wide. Available in 22 or 20 gage galvanized steel. Also, for use in fire doors to 15′ wide.

Type 24ET  Aluminum Extruded Slat

Optional thick-line, 11 gage extruded aluminum slat for exceptional corrosion resistance, durability, strength, and beauty. Available in standard mill finish or optional anodized clear or bronze for architectural needs.

Type 25 Large Flat Slat

Standard flat slat for use on all service doors where environmental conditions are a consideration. Available in 24, 22, 20, or 18 gage galvanized steel. Also for use on all fire doors, especially those requiring gasketing.

Type 18 Small Flat Slat

Optional flat slat for use on service doors to 16′ wide. Available in 22 or 20 gage galvanized steel or 22 gage stainless steel. Also, for use on fire doors to 15′ wide, counter fire doors and counter doors

Type 24ES  Aluminum Extruded Slat

Optional slim-line, 15 gage extruded aluminum slat for exceptional corrosion resistance, durability, and beauty. Lightweight design for use on service doors up to 16; wide. Available in standard mill finish or optional anodized clear or bronze for architectural needs.

Steel slats are galvanized per ASTM standards,treated for paint adhesion and pre-finished before forming with a prime coat and baked-on grey or tan polyester top coat.

Standard Duty Service Door Mounting Details

Large Flat Slat # 25

Large Curved Slat # 30

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