The Schellenberg roller shutter box insulation mat (25 mm) is designed to insulate your roller shutter box. With its excellent insulating and processing properties, it helps reduce heat loss compared to an uninsulated roller shutter box by up to 60%. Additionally, it significantly dampens airborne noise and rattling sounds from the roller shutter slats during strong winds. The breathable material helps prevent mold formation. Seal the joints with adhesive foam or frame foam (not included in the delivery). The roller shutter box insulation can be easily fitted into old, uninsulated roller shutter boxes. It is ideal for room-side box openings.