Use energy efficient structural foam molded plastic, with interior and exterior locking panels for both flaps. An innovative double vinyl flap design creates an energy efficient air pocket for maximum insulation.
Energy efficient structural foam molded plastic
Adjustable frame telescopes 3/4" to 1 3/4" thickness
Nylon for draft restrictor
Innovative Double Vinyl Flap design creates energy efficient air pocket for maximum insulation
Optional Wall Kit, sold separately