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**chuckster57** · 03-17-2023, 02:06 PM

Welcome to the forum

As a rule if there is a place to drill a hole for the exhaust vent it will be a label on the interior wall. Great care should be taken when putting a 4” hole in the side of an RV. Lots of measuring, taa sad king into account any hardware on the exterior.

I would drill a 1/4” pilot hole, then put a layer of tape on the exterior before drilling and would start from the exterior.

03-17-2023, 02:06 PM	#2
chuckster57 Site Team Join Date: Jul 2014 Location: Modesto Posts: 20,350	Welcome to the forum As a rule if there is a place to drill a hole for the exhaust vent it will be a label on the interior wall. Great care should be taken when putting a 4” hole in the side of an RV. Lots of measuring, taa sad king into account any hardware on the exterior. I would drill a 1/4” pilot hole, then put a layer of tape on the exterior before drilling and would start from the exterior. __________________ 2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel. Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS. Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.