Inside and Outside Inlet Diameter for Valterra A10-3351VP HVAC Vent Register

Updated 06/03/2020 | Published 06/02/2020

Question:

Hi, Do rv heater vents that are listed as 4 have duct side round o.d. of 3.75? That is what mine is. Im looking for a replaced that closes. Thanks

asked by: Joe S

Expert Reply:

It does indeed! The Valeterra # A10-3351VP Round HVAC Register has an inlet of 3-3/4 inches outside diameter and 3-5/8 inches inside diameter as shown in the provided photo. The adjustable louvers will allow you to adjust the air flow.

I've linked you to an installation video that you might find helpful.

expert reply by: Mike L