Northwest Doors - Modern Classic Residential Doors Parts and Services

Therma Classic

The Therma Classic™ is an insulated carriage house style steel garage door. The Therma Classic simulates the look of old fashioned swing type doors and comes available in 90 attractive designs. The design patterns are a deeper pattern than most steel garage doors – high definition. This makes the doors more visible from a distance thus enhancing a home’s curb appeal. It features a sandwich construction, flexible joint seal and natural Thermal Break. Doors come with a white polyester finish and can be easily field painted to match any home’s exterior.

View Glass Options | View Panel Options |Warranty (104kb)


  • Section Joint: Tongue and Groove joint between sections with thermal break
  • Thickness: 2"
  • R Value = 9 (Calculated door section R Value in accordance with DASMA-163)
    *R values are calculated specifically for the colder climates and offer the best long term insulating value.
  • Finish: Baked on polyester enamel
  • Colors selection: White
  • Bottom weather seal: U-shape loop type vinyl with aluminum retainer
  • Limited Lifetime Warranty
    • Download Warranty HERE
    • Download Finishing Instructions HERE

Standard Widths: 8'-0", 9'-0", 10'-0", 16'-0", 18'-0", 20'-0"

Standard Heights: 7'-0", 8'-0", 9'-0", 10'-0", 12'-0", 14'-0", Sections available in 27", 28", 31" and 32" in height

  • Single Pane and Insulated Glass Options
  • Low Clearance, High Lift, or Vertical Lift Hardware
  • White Nylon Ball Bearing Rollers
  • Angle Mounted Track
  • Double End Hinges and Long Stem Rollers
  • 25,000, 50,000 and 100,000 Cycle Torsion Springs
  • Powder Coated Hardware
  • 15" or 20" radius torsion hardware; track is 2" bracket mounted. Quiet long life nylon rollers, non-corrosive door fixtures and graduated hinges are standard. U-shaped galvanized struts are supplied with every double car door to keep the door rigid.


Serving The Following Areas: Pierce County, King County, Algona, Auburn, Beaux Arts Village, Bellevue, Black Diamond, Bonny Lake, Bothell, Browns Point, Buckley, Burien, Clyde Hill, Covington, Dash Point, Des Moines, Edgewood, Enumclaw, Fall City, Federal Way, FIfe, Fox Island, Frederickson, Gig Harbor, Hunts Point, Issaquah, Kenmore, Kent, Kirkland, Lake Forest Park, Lakewood, Medina, Maple Valley, Mercer Island, Milton, Newcastle, Normandy Park, North Bend, Pacific, Parkland, Puyallup, Ravensdale, Redmond, Renton, Sammamish, Seatac, Seattle, Shoreline, Skykomish, Snoqualmie Pass, Snoqualmie , Spanaway, Steilacoom, Sumner, Tacoma, Tukwila, University Place, Woodinville, Yarrow Point