Screw-on inspection hatch, white colour. Inspection hatch to screw 150/205mm Octagonal opening --
High UV-resistance and integrated EPDM-seal, concealed installation frame, with deep recessed grips. The white 6" version offers additional an octagonal mounting for lever (MK100) to open. The coarse "sawtooth" thread achieves good tightness and reduces the risk of thread clamping.