So can this vent inside a basement with no odor? We bought a house that has zero roof vents. Can this be used in place of those?

Don't think I 'd iinstall it in the basement. It needs to be above the fixture(s) that it vents. I've used smaller AAVs for indivuaul fixtures and placed them under the cabinet/sink or in the wall. The larger AAVs are desgined to handle several fixtures and replace the need for a large vent that penetrates the roof. These I've placed in the attack (below the roof but inside the building) and have not had any problems.

How long does one of these last until it needs to be replaced? Is there a way to tell if it has failed besides escaped sewer gas smell?

Package shows limited lifetime warranty. I assume when you smell sewer gasses, it has failed, but I really don't expect it to fail. All I know, is that it works and so far, I'm very pleased with the performance.

Does it come with a push-fit connector donut (wide o-ring) for connecting to inside of 4" pipe? Shown on spec sheet, but not for item.

No… just the item. Fits inside 4” sch 40 PVC coupling or 4” Fernco rubber coupling

Is it acceptable to use a rubber boot?

This goes INSIDE the attic. No boot needed.

Studor 20302 Maxi Vent 3 Inch To 4 Inch Air

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🌟 Elevate your plumbing game with Maxi-Vent — the silent hero your system deserves!

ODOR CONTROL READY - Optional replaceable carbon filter reduces unpleasant plumbing odors for a fresher environment
COST SAVING INSTALLATION - Eliminates need for roof penetrations and complex vent piping—streamline your setup
PREMIUM ABS CONSTRUCTION - Engineered for durability and long-lasting performance in your plumbing system
CERTIFIED QUALITY ASSURANCE - Complies with top industry standards including ASSE 10510, NSF 14, and IAPMO for peace of mind
MAXIMIZE VENTING EFFICIENCY - Supports up to 500 Drain Fixture Units for powerful pressure equalization

The 20302 Maxi-Vent Air Admittance Valve is a high-performance plumbing accessory designed to equalize pressure in DWV systems by venting up to 500 DFUs. Constructed from durable ABS plastic and certified to rigorous ASSE, NSF, and IAPMO standards, it simplifies installation by eliminating roof penetrations and vent piping. Ideal for single fixtures, branches, or stack applications, it also offers an optional carbon filter to reduce odors, making it a smart, efficient upgrade for modern plumbing systems.

Specifications

ASIN	B000NID704
ASIN	B000NID704
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#89,218 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #235 in Registers, Grilles & Vents
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (185)
Customer reviews	4.6 4.6 out of 5 stars (185)
Date First Available	15 September 2013
Date First Available	15 September 2013
Included components	IPS STUDOR MAXI VENT
Item Package Quantity	1
Item Weight	249 g
Item model number	GIDDS-301050
Item model number	GIDDS-301050
Manufacturer	Alfi
Manufacturer	Alfi
Material	Acrylonitrile Butadiene Styrene
Part number	GID-301050
Product Dimensions	8.89 x 8.89 x 15.24 cm; 249.48 g
Product Dimensions	8.89 x 8.89 x 15.24 cm; 249.48 g
Size	5-1/4 inche
Specification met	ASSE, IAPMO, NSF

Reviews

K**E

Great product

Eliminated the need for the vent stack through the roof. Since my roof leaked at the vent stack I decided to cut stack down to attic level and have the roofers re-roof and delete stack exposure. Works perfectly.

26.07.2024

S**P

Needed

Perfect stink pipe

11.08.2023

W**N

Toll

Supi

6.12.2025

C**N

Best product to keep sewer gas out.. install takes seconds

The product is amazing it has a rubber gasket attached to it that fits over a 3-inch pipe or slides into a 4-inch pipe. I had a different brand put on last year when there was a lot of pressure it released a gas smell. And the other one went bad and I could not get the gas smell out of my basement that's sewer gas. I put this on yesterday came down this morning to the basement it smells fresh and clean with no sewer gas. I am excited to have this product well worth the money. I have attached the studor photo... and the competitors that does not work

11.08.2017

E**T

Très bien

Qualité vs prix est super

23.10.2022

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