Northwest Doors - Therma Classic™ Residential Doors Parts and Services

The 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 available in large selection of 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 homes curb appeal. True arched windows in a variety of window designs are also available. Doors come with a white polyester finish and can be easily field painted to match any homes exterior.

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The Therma Classic is made from hot dipped galvanized wood grain textured steel skins that are embossed with raised panel designs then sandwiched with a polystyrene core. This type of construction forms a thermal barrier between front and back of door. 20 Ga. steel backer plates are toggle locked to the inside of the back skin prior to assembly. Exterior skins are secured to a polystyrene core with Urethane adhesive, a method of construction that is unparalleled in strength.

Therma Classic doors are available in 2 design series. The S Series doors have multiple vertical panels embossed to form the various designs. The R Series doors start with 40" x 24" embossed recessed panels. Then roll formed pre painted wood grain textured aluminum design elements are mechanically attached as well as bonded to the face of the recessed panels to form a multitude of designs.
  • Section Joint: Tongue and Groove joint between sections with thermal break
  • Thickness: 2"
  • Section Joint: Shiplap joint between sections
  • R Value = 9 (Calculated door section R Value in accordance with DASMA-163)
  • Finish: Baked on polyester enamel
  • Colors selection: White
  • Bottom weather seal: U-shape loop type vinyl with aluminum retainer
  • Limited Lifetime Warranty
  • Widths up to 20' in one inch increments, heights up to 14'
  • 1/8" clear annealed glass standard, clear obscure and insulated glass optional.
  • Decorative hardware
  • 25,000, 50,000 & 100,000 cycle torsion springs
  • Low clearance, high lift and vertical lift track and 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.

  The Therma Classic™
Standard Widths
Standard Heights
Sections available in 27", 28", 31" and 32" in height


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