Nairn inspection ports are manufactured to high tolerances using premium materials to provide high strength, durability and water tightness even in the most demanding applications. In short, total product integrity. Available in white, black or with clear lids.
Manufactured in Australia.
All models incorporate "O" ring seals.
In the 4, 5 and 6" models the seal is located in the rim and is made from EPDM rubber for superior weathering characteristics.
Rims and coloured lids are made from ABS plastic
Polycarbonate plastic is used for clear lids to give both high transparency and impact resistance
All rims have wide caulking flanges