This lightweight, insulated, all aluminum access door is ideal for exterior applications, and also those specific interior applications where corrosion or moisture is a concern. Access to large openings in walls and ceilings is made easy. The non extruded door frame has the same visual aesthetic design as the SUPREME 3000 access door. Comes with gasket on all 4 sides. The aluminum door panel is insulated with 1” TUFF RTM polyisocyanurate.