Most Popular 4-1/8 Inch for 2017 Ram ProMaster 2500

Delivery was great as always. Install very easy to my ambulance/camper conversion. It was my first ceiling vent and later found I underestimated the air flow I would want in the box. Since then I have removed this to move it to the shower/bathroom where it will work best for this application. Purchased the MaxxFan Plus w/ 12V Fan, Thermostat, and Remote - Powered Lift - 10 Speed(MA00-04500K) and FanMate.

It's a good product but it has a flaw. I installed one on my van less than 2 years ago. The fan motor quit. I couldn't find a replacement motor on MaxxFans site so I bought this entire new unit. The motor is tiny and cheap.

I bought this vent to fill the hole left after the AC delete on my old RPOD. I'm not noticing a lot of air movement, as this is a non-powered / no fan vent. But most importantly.. I'm not getting any water coming in and I no longer have about 100 pounds of useless AC creating drag when I tow.

Installed on my Ford E350 Super Duty Van. Always nice & cool in the rear section now compared to the last vent I had up there. Great quality item! etrailer is great to deal with. Been using their items for years.

Always happy with etrailer. I’ve ordered on many occasions and they are quick and professional. Thank you.

Expected the vent to seal when closed. Nope, gaps allow air through. I'm going to sell it on craigslist.