2. Exclusive unitized construction with mechanically interlocking full-steel edges provides unsurpassed durability, strength and security. The foam-filled interlock forms an effective thermal break which prevents cold conduction from the outside to the inside of your home.

3. The environmentally-friendly solid urethane core practically eliminates heat and sound transmission through the door.

4. Heavy duty 20 gauge galvanized hinge reinforcements prevent the door from sagging.

5. 24 gauge hot-dipped galvanized steel panels with interlocking edges provide maintenance-free structural integrity. Baked-on primer coat promotes excellent paint adhesion.

6. Compression or magnetic weather-stripping minimizes air & water infiltration.

7. A five-fin sweep with an integrated drip cap stops air and water penetration and is not affected by temperature extremes.

8. Adjustable thermally broken threshold with real solid oak riser and attractive trim piece is designed for maximum protection against moisture and air penetration.

9. Foam corner seals stop water and drafts at the critical bottom corners.