Standard 4 inch Inspection Port Black
Create a convenient access point with this 4 inch inspection port in black. The screw-out lid allows the opening to be accessed when needed, while an O-ring lid seal forms part of the closing arrangement.
UV-resistant ABS plastic construction is specified for this port family. Choose the size by checking both the opening and the surrounding surface: the nominal inch designation identifies the model, while the millimetre measurements are the practical references for fitting.
Code 403661 requires a 100mm hole and has a 145mm outside diameter. The black finish lets you match the port to the surrounding panel or nearby fittings.
When replacing an existing port, compare the flange footprint and fastening arrangement as well as the hole size. Check the fit of the lid and the condition of the seal before putting the access point back into use.
Choosing and using this product
For this version, colour: Black. Use that specific detail when comparing the item with your existing equipment or planned installation. Other sizes and configurations in the range should be checked separately rather than treated as equivalent.
Include the attachment points in routine boat inspections. Keep moving or seating surfaces clear where applicable, and follow the product’s care instructions for its material and finish. Retaining the size and part code is useful when replacing another fitting elsewhere on the boat.
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
- UV resistant ABS plastic inspection port with screw-out lid and O-ring lid seal.
- Colour: Black.
- Nominal size: 4 inch.
- Hole size: 100mm.
- Outside diameter: 145mm.
- Product code: 403661