Flip-Flap doors are panel and wall-mounted, double and single-ply doors that can open 180 degrees in both directions and remain open if necessary. 40 mm thick, polyurethane-borne, with or without windows, used in service transitions or in production. Double-layer doors are produced up to 200 * 260 cm net transition. Impact-resistant polyethylene sleeves and CR-NI are available. Doors are made of stainless steel or polyethylene.