4''Nairn Black Port

4''Nairn Black Port 36102 Nairn inspection ports are manufactured to high tolerances using premium materials to provide high strength, durability and watertightness even in the most demanding applications. In short, total product integrity. Rims and coloured lids are ABS plastic while polycarbonate plastic is used for clear lids to give both high transparency and impact resistance. Threaded lids except 36112 with snap-in lid.