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**pjmoreland** · 08-12-2023, 02:00 AM

The door vent has rubber flaps that act like check valves to let air out more easily than in.

08-12-2023, 02:00 AM	#12
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 6,278	Re: Door Pressure Relief Valve Retrofit The door vent has rubber flaps that act like check valves to let air out more easily than in.