Inspection hatch where the standard hatch consists of three parts: frame, hatch and fastening sheet. The door is made of galvanised sheet steel powder coated with NCS 0502Y. The frame and mounting bracket are made of galvanised sheet steel. The door is fastened to the frame with a snap lock. The frame is fixed to the wall and ceiling with clamp brackets for board thicknesses between 12.5 - 52 mm.