4" Inspection Lid Features:
- Inside Diameter: 4"
- Outside Diameter of Collar 6 1/8"
- Hole Cut Size: 4 1/2"
David V. 18 Jan 2013
so far so GOOD!!!!!!! Received item very quickly. It works just fine. Fit was good!
Recommend this Company
Would Buy Again
*Note: Product Does Not Have A Gasket Offered For It. We recommend running a bead of Food Grade NSF FDA RTV silicone caulking underneath the collar if you have leaking concerns. This can be purchased on Amazon.