Fasel tunnel-type insulating box made with a high-density expanded Neopor body and interior frame with grid 7 galvanized steel rods 4 mm welded which increases strength and guarantees maximum rigidity during work. The boxes have aluminum rails to retain the coating and hold the manhole cover. Its materials and structure provide high levels of thermal and acoustic insulation.
Ideal for installation with Supergradhermetic type adjustable shutters. Prepared for motorized operation.