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A: Hi Mike, thank you for your inquiry. This item joins 3 in. corrugated HDPE piping to clay piping. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot!
A: for this application you would need a 4"x3" reducing coupler: ADS part 0314AA https://www.homedepot.com/p/Advanced-Drainage-Systems-4-in-x-3-in-Polyethylene-Slip-Snap-Reducing-Coupler-0314AA/100540263
A: the larger opening is to fit 4" corrugated drain pipe. An end cap would not fit as it too would be the same diameter as this end of the fitting. to connect an end cap you would need a 4" pipe section to snap into each piece for a secure fit.
|Brand||Advanced Drainage Systems||Advanced Drainage Systems||Advanced Drainage Systems||Advanced Drainage Systems|
|Name||3 in. Singlewall External Snap Coupler||4 in. Singewall Adapter||6 in. Singlewall External Snap Coupler||8 in. Singlewall Solid Snap End Cap|
|Material||Polyethylene||Polyethylene||Polyethylene||HDPE (High Density Polyethylene)|
|View Product||View Product||View Product||View Product|