Knox with Thermal Break - Single Arch Swing:Left Hand In Swing For an airtight seal

For an airtight seal

the tabs on the jamb are pre-drilled for easier installation

the door sweep at the bottom keeps drafts

it can be solved with double flat doors

Knox with Thermal Break - Single Arch Swing:Left Hand In Swing For an airtight sealOur Knox single entry iron door delivers a modern industrial feel with its 3 horizontal bars and full 5 8" tempered dual pane glass operable panel. Easily cleanable and providing a sense of security, this contemporary design is the perfect balance of elegance and flair. The Knox is fabricated with industry above standard 12 gauge material. The doors are 2" inches thick, include a steel threshold, and bullet hinges with grease fittings welded on the