Mutual Industries - 96-2-4 Advanced Drainage Systems 0432AA 4" Snap Drain End Cap

I have a 4" corrugated pipe that I needed an endcap for and so I purchased this supposedly 4 inch endcap for it only to find out after getting it that the ID width of the cap is really 4 3/4" and so is too big for a 4 inch drain pipe. Did the laws of math and measuring change on me during the lockdown or something?

Needed 5 caps. Bought one to see if truly 4" cap. Not even close. It says it is 4" on the cap. Is no less than a 5 " inside diameter cap.

Feels like it’s made out of a pop bottle. Worst of all, it is ridiculously oversized, thus unusable. Listen to the other reviews, it’s too large.

Ended up returning, not needed on my project, no issue from the vendor, I would buy from them again

Says 3" in the header, 4" in the product description. Thats what I received was a 4" but needed a 3". Not worth returning for 5 dollars I will use some other time I guess.

Perfect 4" end cap. Realized I needed a 3" and the company was easy to work with.

Worked exactly as we hoped.

Inexpensive and did the job