Nairn 4 inch Inspection Port White
Choose an Australian-made Nairn 4 inch inspection port with a white finish for a clearly specified marine access fitting. Its ABS plastic rim and coloured lid are paired with a wide caulking flange, helping you plan the surrounding mounting and sealing area.
The EPDM rubber O-ring is located in the rim. This seal material is selected for weather resistance and forms part of the port’s watertight closing arrangement. Inspect the seal and mating surfaces when servicing an existing port so the replacement is fitted to a suitable assembly.
This version uses a 100mm hole and measures 145mm across the outside. The 100mm opening and 145mm flange diameter describe different parts of the installation; measure each before ordering.
Select code 404601 for this white standard Nairn variant. Match the size, finish and mounting arrangement together when replacing an older fitting; a port from another range should not be assumed interchangeable because it shares the same nominal diameter.
Choosing and using this product
Consider how the fitting will be used in the normal boat layout. Allow room for hands, tools and any intended movement, and check that it does not obstruct an access opening or another control. Offer the parts into position before marking or making permanent changes.
The listed material, finish and dimensions help you select a version that suits the job and surrounding fittings. Measure the actual location rather than relying on a familiar-looking shape. Small differences in projection or spacing can change how comfortably the completed arrangement works.
Check the stated supply quantity and inclusions when ordering. Some listings describe an individual component, while others supply a pair, pack or complete assembly. Match any additional fixings and supporting parts to the installation requirements rather than assuming they accompany the visible fitting.
Product details
- Australian-made inspection port with ABS plastic rim and coloured lid, wide caulking flange and rim-mounted EPDM rubber O-ring seal for weather resistance and watertightness.
- Colour: White.
- Nominal size: 4 inch.
- Hole size: 100mm.
- Outside diameter: 145mm.
- Product code: 404601