MA-GB System floor manhole cover is made of 2.5mm thick stainless steel. The depth of the tank is 50 mm and the installation height is only 75 mm. The frame is equipped with a special frost and weather seal to protect against seepage and odor leakage. The frame is fixed by casting at floor level. Then the tub can be filled and inserted into the frame. The opening is supported by two quality gas pistons that allow the opening and closing of the manhole by a single person. Safety is guaranteed by a fall protection device. The tub can be filled with stone, tile, concrete, resin, granite, wood and hard flooring or other materials. Load: up to Class B125 according to EN 124.  Material: 2.5 mm thick stainless steel frame and tub. Areas of application: For floor ducts both indoors and outdoors, where the highest quality is valued.  Special dimensions are available upon request. Areas of application: For manholes that are opened frequently and without any special effort. Especially for inspection purposes such as regular maintenance of swimming pools. The opening and closing of the compartment is done without any special effort. Opening: Each FF manhole cover is supplied with locking/lifting keys and an assembly manual. Installation: The installation must be carried out professionally according to our installation instructions. Dimensions: Customized sizes can be produced in every dimension upon enquiry.