Close this search box.

Open the door to peace of mind.™

THERMA TECH 3500, 3 Layer, EPS Insulated

(1 customer review)

The Northwest Door Therma Tech 3500 (formerly known as Therma Tech II) garage door offers an insulation value of 10.4 and features a sandwich construction, flexible joint seal, and natural Thermal Break. With six wood grain textured panel designs to choose from, including Short Raised, Long Raised, Shaker, Country, Cottage, and Flush, you can find the perfect style for your home. These doors are hot-dipped galvanized and pre-painted in various standard colors, with Dark and Medium wood grain finishes available for selected panel designs. Customize your door further with a wide selection of window designs.


The Therma Tech 3500 is equipped with a Tongue and Groove joint between sections with Thermal Break and a Flexible Vinyl Joint Seal, ensuring excellent insulation with its 2″ thick EPS core (*R=10.4). This door comes in various panel types and sizes, including Flush Wood Grain, Short Raised, Long Raised, Shaker, Country, and Cottage Panels, giving you versatile options to complement your home. Choose from a range of attractive colors like Bright White, Brown, Almond, Sandstone, and Black, with the additional option of Dark and Medium wood grain finishes available for selected panel designs. The door is finished with a durable Baked on polyester enamel, and the U-shape loop type vinyl bottom weather seal with adjustable aluminum retainer helps enhance energy efficiency and weather protection.


Northwest Door website – THERMA TECH 3500

Additional information




2" EPS

Paint Method

No Special Paint Options

Wind Rating

No Information on Wind Rating



Environmental Assurance

No Information on Environmental Assurance


Yes, request a quote for more info.

Door Types

Sectional Door, Steel

Design Options

Glass Options

Color Options




Northwest Door warranty information



Metal Door Painting Instructions


Wood Door Finishing Requirements


1 review for THERMA TECH 3500, 3 Layer, EPS Insulated

  1. Christian R

    I am glad I chose this garage door my house looks great

Add a review

Your email address will not be published. Required fields are marked *

Select the fields to be shown. Others will be hidden. Drag and drop to rearrange the order.
  • Image
  • SKU
  • Rating
  • Price
  • Stock
  • Availability
  • Description
  • Additional information
Click outside to hide the comparison bar