ASTA Door Model 622 (22 gauge front/24 gauge back) Insulated Rolling Steel
Service Door is produced with the highest quality and durability in the industry. The Model 622 consists of 3” 22 gauge flat slat with 24 gauge backer that encloses a 5/8” insulation strip between the two slats.
- The Model 622 has two finish options: White Topcoat or Prime Gray.
- The Model 622 is available in sizes up to 24 x 20.
Standard features include:
- enclosed hood with baffle
- reduction gear chain hoist
- 3 piece structural steel guides with weatherseal
- a double angle bottom bar with weatherseal.
The Model 622 is the perfect choice for industrial, commercial, or climate controlled applications.
22 gauge (front) and 24 gauge (back) galvanized steel roll
formed in continuous lengths. Galvanized according to ASTM
A653-G90, and finished with baked epoxy primer and/or baked
*Insulation … to be 5/8” polystyrene foam. Effective insulating value to be
Each end of alternate slats to be fitted with endlocks to
provide a wearing surface in the guides and to maintain slat alignment.
Fastened with 1/4” rivets.
- Bottom Bar
Curtain to be reinforced with a bottom bar consisting of two
2” x 1 1/2” x 1/8” structural steel angles with P.V.C. bulb astragal.
- Hand Chain Lock
Lockable bracket mounted on guide angle or wall suitable for
padlocking (padlock by others).
- Drum Assembly
Barrel to be a steel pipe of diameter and wall thickness to restrict
maximum deflection to .03” per foot door width.
Springs to be oil tempered grease packed helical torsion type designed
to cycle 20,000 times with an overload factor of 25%. Springs are to
be mounted on a cold rolled steel inner shaft.
End Bearing to be self-lubricating ball bearings.
- Bracket Assembly
Bracket Plates to be 1/4” minimum thickness steel plate and
enclose ends of barrel assembly.
Drive End Bracket Plate to be filled with a self-aligning sealed
Drive to consist of roller chains and sprockets.
Hand Chain to be galvanized machine link. Pull not to exceed 35 lbs. (156 N).
- Guide Assembly
Wall Angles to be 3/16” minimum thickness structural steel.
Guide Angles to be 3/16” minimum thickness structural steel
with removable headstops. Guide Depth to provide slat penetration
adequate to satisfy specified windloading.
- Guide Weatherseal
One piece vinyl weather seal attached to door guide on the
non-coil side (brush seal with retainer available upon request).
Hoods to be 24 gauge galvanized steel with baked epoxy primer and/or
baked polyester topcoat and designed to enclose door coil.
Reinforcing to be 1/4” thick steel brackets for door over 16’0” wide.
- Hood Baffle
8” wide pvc rubber riveted to the inside of the hood.