Superior Insulation - Unrivaled
Hörmann 440U & 450U are available in two section thicknesses; the 440U doors at 1½” with an R-Value of 15.7 and 450U at 2” with an R-Value of 18.4. Both door series offers two sided steel sections and 100% CFC-free polyurethane foam core insulation for maximum protection against the elements. Manufactured to the highest quality standards in the industry, all 440U and 450U doors come with proven tongue and groove section joints.
Ultimate Energy Efficiency
Highly energy-efficient polyurethane foam core
Environmentally friendly high density polyurethane foam core featuring a proprietary, far superior polyurethane blend injected between 25 gauge galvanized steel sheets front and back. This provides maximum insulation for substantial energy savings and ultimate panel stability for extremely quiet door operation.
Hörmann Special Features
Hörmann 440U and 450U doors utilize safety fixtures on their bottom sections for added safety for your peace of mind.
Double end stile design adds to the door’s overall structural integrity and its long term performance.
Note: Double end stile is available as an upgrade for all door sizes, but standard for doors over 16’2” wide.
Quality in Every Layer
The structural integrity of each section is enhanced inside and out to offer maximum protection against the elements to provide you with a long lasting surface finish and reduced maintenance cost. The bonding adhesive is applied to the galvanized coated steel substrate, followed by a durable primer coating. The thick insulating core of high-grade CFC-free polyurethane rigid foam is injected evenly in a continuous computer-controlled process.