The floor manhole cover System MA-GTR is made of stainless steel. The frame is equipped with a special frost and weatherproof gasket to protect against seepage and odor leakage. The opening is supported by two gas pistons; in addition, an anti-fall protection device guarantees the safety of the manhole cover. The tank can be filled with stone, tile, cement, resin, granite, wood and hard flooring or other materials. Areas of application: For both indoor and outdoor floor ducts, where the highest quality is particularly appreciated. Dimensions: Customized sizes can be produced in every dimension upon enquiry. Each FF manhole cover comes with tightening/lifting keys and an assembly manual.