300 Series

residential garage overhead door

300 Series Commercial Slat Doors

Asta Door 300 Series Commercial Slat Doors are produced with the highest quality and durability in the industry.

Asta Door 300 Series Commercial Slat Door is available in sizes up to 16' x 16' or 20' x 12' and finished in a White Top Coat, Prime Gray or Galvanized andd is the perfect choice for commercial and industrial applications.

The 300 Series is available in the following models:

  • Model 320 (20 Gauge) Commercial Slat Door
  • Model 322 (22 Gauge) Commercial Slat Door
  • Model 324 (24 Gauge) Commercial Slat Door
  • Slats: Slats: 24 gauge galvanized steel cold roll formed in continuous lengths. Galvanized according to A.S.T.M. A653 - G90 and finished with baked epoxy primer and baked polyester top coat
  • Endlocks: 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 a 2" x 2" x 1/8" (50.8mm x 50.8mm x 3.18mm) thick structural steel angle with E.P.D.M. astragal for doors up to 16’ wide, otherwise 3/16” minimum thickness structural steel angle.
  • Curtain Lock: Hardened 8 gauge galvanized steel bolts attached to bottom angle suitable for padlocks (not included).
  • Drum Assembly: (A) Drum: to be formed with 24 gauge galvanized steel sheet rolled around and attached to stamped 16 gauge galvanized steel drums to restrict deflection to .03" per foot (2.5mm/m) of door width. (B) Springs: to be oil tempered, grease packed helical torsion type designed to cycle 12,500 times with an overload factor of 25%. Springs are to be mounted on a 1" (25.4mm) black steel pipe of minimum Schedule 40. (C) End Bearings: to be self lubricating ball bearings
  • Steel Mounting Plates: For lateral jamb extension to provide door support.
  • Electric Operation: Easy, fast motorized operation at a push of a button.
  • Top Draft Stop: To seal tight at the header to reduce air filtration.
  • Guide Weatherseal: One piece vinyl weather seal attached to door guide on the non-coil side (Brush seal with retainer available upon request).
  • Vision Panels: 5” x 3/4” cutout spaced approximately 3” apart and covered with clear Lexan (Flat Slat Only).
  • Windload: Available design to +40/-37 PSF up to 16’ wide, tested to +60/55 PSF based on ASTM E-330 test method to meet Florida Building Code requirements. +27.4/-25.3 PSF design for up to 20’ wide also available.
  • Gauges: For 22 gauge slat refer to Model 322. For 20 gauge slat refer toModel 320.
Available in White Topcoat, Prime Gray, or Galvanized

Asta Standard Color Chart


Main Office - ADC North

770-975-3500

  • 4255 McEver Industrial Drive
  • Acworth, GA 30101
  • Fax: 770-974-1455

Fayetteville ADC-South

770-716-3181

  • 500 Marksmen Court
  • Fayetteville, GA 30214
  • Fax: 770-716-3171

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