Northwest Door

Northwest Door is the Puyallup, Washington, garage-door manufacturer whose current products carry the Hörmann name. Its Therma Tech 3500 and Therma Style 5500 insulated steel doors give you an R-10.4 rating with enough panel and window choices to make the garage belong with the house. That is the right starting point for a Montana home: choose the insulated construction, then get the appearance right.

Crawford Door opened in 1946. The company received the Northwest Door name when the DeWitt family purchased and rebranded it in 1966. Northwest Door began manufacturing wood doors in 1970. Hörmann Group acquired Northwest Door in 2015.

Tech Steel Garage Doors

Start with how you use the garage. Pro Tech 2500 uses 2-inch, 25-gauge steel construction and comes uninsulated, with optional polystyrene insulation rated R-7.4. For a detached garage used to park vehicles and store yard tools, that gives you a straightforward choice between uninsulated and insulated construction.

Therma Tech 3400 moves to 1½-inch polystyrene-insulated steel construction rated R-9.0. Modern Tech 3550 gives you contemporary styling with 2-inch, 24-gauge, three-layer steel construction rated R-10.4. When your garage doubles as a winter work space, put insulated construction ahead of the window pattern. Montana’s indoor project season is a long time to spend beside an uninsulated door.

Door line	Construction	R-value
Pro Tech 2500 with optional insulation	2-inch, 25-gauge steel with polystyrene insulation	R-7.4
Therma Tech 3400	1½-inch polystyrene-insulated steel	R-9.0
Modern Tech 3550	2-inch, 24-gauge, three-layer steel	R-10.4
Therma Tech 3500	Steel front and back with a polystyrene core	R-10.4
Therma Style 5500	2-inch steel construction with a polystyrene core	R-10.4
Clima Elite 5800	2-inch steel construction, wood-composite overlay and 1½-inch polyurethane insulation	R-15.7

Style Carriage Garage Doors

Therma Style 5500 combines deeply recessed, woodgrain-textured steel panels with 66 panel-and-window combinations. That range matters on Flathead log homes and timber frames. You can choose a carriage pattern that belongs beside substantial wood siding and exposed timbers instead of letting the garage dominate the front of the house.

The construction backs up the appearance: steel front and back surfaces surround a polystyrene core, with an R-10.4 rating. Thermally broken tongue-and-groove section joints are designed to reduce air infiltration. Insulation and joint construction both deserve your attention when cold weather settles in.

Therma Tech Insulated Garage Doors

Therma Tech 3500 is the line to start with when you want insulated steel and a broad choice of panel designs. Its six woodgrain-textured designs include Country, Cottage and Shaker, alongside 26 window designs. You have room to match the house without giving up the steel-backed, polystyrene-core construction and R-10.4 rating.

A Flathead garage spends four months under inversions that trap cold air in the valley, and Whitefish carries 63 inches of snow a winter against the bottom section. That makes the 3500’s thermally broken section joints, designed to reduce air infiltration, a detail worth buying. A panel’s insulation rating is only part of choosing a door for a cold garage; pay attention to the joints between sections, too.

Choose the panel and finish together. The seven finishes include White, Sandstone, Almond, Mocha Brown, Black, Dark Woodgrain and Medium Woodgrain. For a wood-tone finish, choose a design other than Flush. For a Flush door, work with the solid colors.

Therma Tech 3500 carries a limited-lifetime door warranty, with separate three-year warranties for hardware and springs. Those moving parts have their own coverage periods, so compare all three when you choose.

Classic Aluminum Garage Doors

For a full-view aluminum door, compare Luma Classic 7400 and Modern Classic 7500. Luma Classic uses 1½-inch all-aluminum construction with true stile-and-rail framing. Modern Classic uses extruded aluminum and offers anodized and powder-coat finishes. These are the lines to consider when the full-view appearance is central to your house design.

Infinity Classic 7800 combines 2-inch insulated aluminum construction with extruded overlays, giving you another route when you want a defined overlay pattern.

Therma Style Finishes and Warranty

All six Therma Style 5500 models come in standard white and can be field painted. That is useful when you want the garage door to match existing trim on a Montana house.

Plan a dark color around the door’s sun exposure. Montana’s UV at elevation and direct afternoon sun make that a construction decision as well as a color decision. Dark finishes can cause thermal bowing, and Hörmann requires Class II reinforcement for field-painted finishes with a light reflectance value, or LRV, below 15. Include that reinforcement in the plan when you choose a dark finish.

The Therma Style 5500 limited-lifetime door warranty comes with five-year hardware coverage and three-year spring coverage. Limited lifetime does not mean lifetime coverage for the hardware and springs. The five-year hardware term is a concrete reason to give this line a close look alongside its carriage styling.

Clima Elite Carriage-House Doors

Clima Elite 5800 is crafted in Puyallup’s custom door shop. It combines 2-inch steel construction with a wood-composite overlay and 1½-inch polyurethane insulation, with an R-15.7 rating.

For a carriage-house appearance with a higher R-value than the R-10.4 Therma Style, this is the step up. The overlay gives you another way to complement a timber-frame house, while the insulation keeps cold-weather planning part of the decision.

Northwest Door in Puyallup, Washington

Hörmann continues manufacturing at the original Northwest Door facility in Puyallup, Washington, a 288,000-square-foot building. An approximately 40,000-square-foot storage complex was added there in 2025.

The Puyallup operation produces insulated and uninsulated steel pan doors, styrene-insulated sandwich doors and full-view aluminum doors. It also manufactures guide tracks and springs. The Northwest Door name connects to an ongoing manufacturing operation, with the current door choices carrying Hörmann branding.

Choosing Between Pro Tech and Therma Style

Pro Tech 2500 and Therma Style 5500 address different priorities. Choose Pro Tech for traditional steel construction with insulation available as an option. Choose Therma Style when you want carriage panels, 66 panel-and-window combinations and R-10.4 insulated construction together. Decide how you will use the garage and how much of the house front it occupies, then choose the door that handles both jobs.

Why Northwest Door

Buy the current Hörmann range behind Northwest Door for the combination of insulated construction and real design choice. Therma Tech 3500 gives you six panel designs at R-10.4; Therma Style 5500 gives you 66 panel-and-window combinations at the same rating. You can get the construction a Montana garage deserves and a door that looks right on your house.

Frequently Asked Questions

Which Northwest Door garage door is the warmest?

Clima Elite 5800, at R-15.7, with 1½ inches of polyurethane behind a 2-inch steel section and a wood-composite overlay. Therma Tech 3500, Modern Tech 3550 and Therma Style 5500 all sit at R-10.4; Therma Tech 3400 at R-9.0; Pro Tech 2500 at R-7.4 with its optional insulation. Pick by how much time you spend in the garage in winter, then by the look.

Are Northwest Door garage doors still made in Puyallup?

Yes. Hörmann builds them in the original Northwest Door plant in Puyallup, Washington, a 288,000-square-foot building that also makes the guide tracks and springs, and added a 40,000-square-foot storage complex in 2025.