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Northern Door Company Inc.  White Bear Lake, Minnesota   Ph. 651-490-1599

                                                     

TriCore  
With a proven track record for thermal efficiency and extreme durability, TriCore™ is simply the best door you can specify. With expanded polystyrene insulation thermally bonded between two steel skins, TriCore doors have an exceptional R-value of 16.05. And its superior construction has made it the most specified door on the market. Our revolutionary TriCore door was the first 3" thick commercial thermal-break door ever offered.

 

ThermaSeal 
ThermaSeal™ - Our durable, energy-efficient sectional door. Our exclusive process fills 100% of the door's interior space with energy-saving polyurethane foam insulation to deliver exceptional R-values. This process also provides superior foam density for excellent structural integrity. For maximum thermal protection, choose ThermaSeal.

 

SteelForm
Rugged SteelForm™ doors are ideal for commercial and industrial applications. SteelForm door sections are a full 2" thick and made of hot-dipped galvanized steel for maximum rust resistance

 

AlumaView
AlumaView™ doors have long been the standard fixture for facilities that require dependable, attractive doors that offer maximum visibility. With an anodized-finished extruded aluminum frame, AlumaView door sections are a full 1-3/4" or 2" thick.