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

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

Help Track order

Account Cart

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

Help Track order

Account Cart

R2608

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Description

🌟 Elevate your plumbing game—vent smarter, not harder!

BUILT TO LAST - Constructed from high-grade ABS plastic for long-lasting durability and corrosion resistance.
COMPACT DISCREET - Sleek 3.5 x 3.5 x 6 inch design fits seamlessly into any plumbing setup without bulky piping.
ODOR CONTROL READY - Optional replaceable carbon filter reduces unpleasant plumbing odors, keeping your space fresh.
MAXIMIZE VENT EFFICIENCY - Handles up to 500 DFUs on stack vents, ensuring optimal air admittance without roof penetrations.
CERTIFIED QUALITY ASSURANCE - Meets rigorous ASSE, NSF, IAPMO, and Intertek standards for reliable, code-compliant performance.

The Studor 20302 Maxi-Vent is a compact, ABS plastic air admittance valve designed to efficiently vent up to 500 DFUs on stack applications. It eliminates the need for costly roof penetrations and vent piping, complies with top industry standards, and offers optional odor control with a replaceable carbon filter. Perfect for modern plumbing systems seeking reliable pressure equalization and discreet installation.

Specifications

ASIN	B000NID704
Best Sellers Rank	#82,689 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Filter Valves
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (195)
Date First Available	September 9, 2006
Included Components	IPS STUDOR MAXI VENT
Item Package Quantity	1
Item Weight	8.8 ounces
Item model number	GIDDS-301050
Manufacturer	Alfi
Material	Abs,Plastic
Part Number	GID-301050
Product Dimensions	3.5 x 3.5 x 6 inches
Size	5-1/4 inche

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.