4" White Inspection Port

The 4" White Inspection Port by Nairn delivers unparalleled strength, durability, and water-tightness for demanding applications. Crafted with precision and premium materials, these inspection ports ensure total product integrity. The rims and colored lids are constructed from ABS plastic, offering robustness, while clear lids are made from polycarbonate plastic, providing high transparency and impact resistance. Threaded lids are standard, except for model 36112, which features a snap-in lid. Upgrade to the reliability and versatility of Nairn's 4" White Inspection Port for your marine or industrial needs.