Thermally-Broken Door Sandwich Door

residential garage overhead door

C.H.I. Models 3212 and 3216

Models 3212 and 3216 are durable, thermally-broken doors.

Constructed of the finest raw materials by skilled craftsmen and customized with computer-aided precision.

C.H.I. Sandwich Micro-Grooved Thermally-BrokenModels

  • Model 3216, 26-gauge, Polyurethane
  • Model 3212, 20-gauge, Polyurethane

C.H.I. Sandwich Micro-Groove Doors Features


  • Featured four evenly spaced micro-grooves that run horizontally across each section.
  • 2" thick sections are foamed in place with polyurethane for superior R-value.
  • Thermally-broken to eliminate thermal conduction
  • Gasket seal between sections provide for an extremely tight weatherseal
  • Concealed steel back-up plates run from top to bottom of each section for secure hardware attachment
  • Bottom "U" type astragal is a standard feature
  • Model 3216 is available in white, almond, sandstone or brown
  • Model 3212 is available in white.


  • Tracks are 2" or 3", as specified
  • Available in bracket mount, angle mount, clip angle mount, 12" radius, 15" radius, high lift, vertical lift, roof pitch or duel track low headroom
  • Optional one (1) piece 2" vertical lift track is available for doors 7' to 10' high


  • Package includes 11-gauge or 14-gauge hinges as specified
  • 2" or 3" short-stem or long-stem ball bearing rollers
  • Heavy-duty adjsutable top roller brackets

C.H.I. Sandwich Door Springs

  • Torsion springs are helically wound with oil-tempered wire
  • Springs are individually-calibrated for each door
  • Torsion tubes are galvanized for rust resistance
  • High cycle spring options may be specified

C.H.I. Micro-Grooved Sandwich Door Insulation

  • Foamed-in-place polyurethane core
  • R-value* - 17.54


  • White
  • Almond
  • Sandston
  • Brown
  • Gray

Manufacture Term: 

Asta Door Corporate Office


  • 638 Cassville White Rd NW
  • Cartersville, GA 30123
  • Fax: 770-974-1455

Fayetteville ADC


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

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