【High quality】: Heavy duty,UV stabilized white ABS construction,anti-corrosion,durable to use in marine environment.
【Easy installation】: Easy to install with pre-drilled countersunk fastening holes (screws not included),For safe installation on both horizontal and vertial place;
【Special design】:Non-corrosive synthetic parts and durable O-ring sealed;
【Size】:180°opening hatches; 6 inch deck plate;198mm diameter outside;
【Specifications】:Slip-Proof Surface : For safe installation on both horizontal and vertial place;