--- product_id: 13803038 title: "Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve" price: "€ 128.16" currency: EUR in_stock: true url: https://www.desertcart.fr/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air store_origin: FR region: France --- # Compact 3.5x3.5x6 inch size Vents up to 500 DFUs Durable ABS plastic build Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve **Price:** € 128.16 **Availability:** βœ… In Stock ## Summary > 🌟 Elevate your plumbing gameβ€”vent smarter, not harder! ## Quick Answers - **What is this?** Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve - **How much does it cost?** € 128.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Constructed from high-grade ABS plastic for long-lasting durability and corrosion resistance. - β€’ **Compact & Discreet:** Sleek 3.5 x 3.5 x 6 inch design fits seamlessly into any plumbing setup without bulky piping. - β€’ **Odor Control Ready:** Optional replaceable carbon filter reduces unpleasant plumbing odors, keeping your space fresh. - β€’ **Maximize Vent Efficiency:** Handles up to 500 DFUs on stack vents, ensuring optimal air admittance without roof penetrations. - β€’ **Certified Quality Assurance:** Meets rigorous ASSE, NSF, IAPMO, and Intertek standards for reliable, code-compliant performance. ## Overview 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. ## Description Product Description Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors. From the Manufacturer Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors ## Features - For use with: Venting Single Fixture, Individual Branch, Circuit Vent Or Stack Type Application Up To 500 DFU - Material of Construction: ABS Plastic - Standards: ASSE Performance Standard 10510 And 1051, NES-592, NSF Standard 14, IAPMO, File No C-3803, ITS Intertek Testing Services - Package Dimensions : 5.5" L x 5.5" W x 8" H ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000NID704 | | Best Sellers Rank | #74,152 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 (197) | | 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 | ## Images ![Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve - Image 1](https://m.media-amazon.com/images/I/51Zq1PXutjL.jpg) ## Questions & Answers **Q: 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?** A: 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. **Q: 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?** A: 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. **Q: 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.** A: No… just the item. Fits inside 4” sch 40 PVC coupling or 4” Fernco rubber coupling **Q: Is it acceptable to use a rubber boot?** A: This goes INSIDE the attic. No boot needed. ## Frequently Bought Together - Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve - Studor 20341 Mini-Vent Air Admittance Valve with PVC Adapter, 1-1/2- or 2-Inch Connection - Oatey Sure-Vent 1-1/2 in.–2 in. 160 Branch, 24 Stack DFU Air Admittance Valve with White PVC Sch. 40 Adapter --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air](https://www.desertcart.fr/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-10-06*