Insulated Steel (AP 138)

Insulated Steel (AP 138)


Reliable, Quality, and Efficient
1 3/8″ – 13 RV garage doors feature our sandwich construction of steel-polyurethane-steel and between-section seals for efficiency. View Insulated Steel Brochure→​​

More Information

​​​​​​​​​​​​​​For premium construction and maximum thermal efficiency, a Dover & Company insulated steel door is the ideal choice. This series of doors feature our sandwich construction of steel-polyurethane-steel as well as between-section seals with thermal breaks to reduce air infiltration. With several panel designs to choose from, these doors offer design flexibility, durability and thermal efficiency that will help keep your home comfortable in cold or hot climates.

Why Choose Dover & Company?

4.8 Star-Rating

Across all online review sites

A+ BBB Rating

Our rating from Better Business Bureau

Since 1936

we've been specializing in garage doors

Window Style Options

Panel Style



What's a Field Check?

Dover offers free field check, that ensure a perfect and seamless installation. After placing your order a representative will contact you and double check your measurements to make sure everything is correct.

How to Measure Your Garage Door

Powder-Coated Track