--- product_id: 401474754 title: "Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill" brand: "studor" price: "€ 178.14" currency: EUR in_stock: true reviews_count: 5 category: "Studor" url: https://www.desertcart.sk/products/401474754-studor-20381-redi-vent-air-admittance-valve-with-recessed-box store_origin: SK region: Slovakia --- # UPC & ICC certified for code compliance Compact recessed box 3.6x5.9x7.1 in One-piece snap-on grille for easy install Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill **Brand:** studor **Price:** € 178.14 **Availability:** ✅ In Stock ## Summary > 🚿 Upgrade your vent game—no roof, no fuss, just flawless airflow! ## Quick Answers - **What is this?** Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill by studor - **How much does it cost?** € 178.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/401474754-studor-20381-redi-vent-air-admittance-valve-with-recessed-box) ## Best For - studor enthusiasts ## Why This Product - Trusted studor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Lightweight:** Robust construction at just 159g ensures longevity without bulk - • **Code-Ready & Accessible:** Includes integral test cap and meets UPC/ICC standards for hassle-free inspections - • **Universal Compatibility:** Works flawlessly with Mini-Vent, Tec-Vent, and Redi-Vent valves for versatile use - • **Sleek, Low-Profile Design:** Recessed box and grille blend seamlessly into cabinetry for a clean, professional finish - • **Effortless Ventilation Solution:** Eliminates costly roof penetrations with smart air admittance tech ## Overview The Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Snap-On Grille offers a compact, code-compliant ventilation solution that prevents water seal loss without roof venting. Designed for easy installation and aesthetic integration, it supports multiple Studor valve models and includes an industry-first integral test cap for maintenance convenience. ## Description Simplify drainage and waste venting with the Studor Redi-Vent Air Admittance Valve. The unique design of the Studor Redi-Vent provides ventilation to prevent the loss of water seals in traps without the need for expensive roof penetration and vent piping. When installation of a Studor Air Admittance Valve is not feasible in an existing cabinet, the included Recessed Box aesthetically conceals valves while providing accessibility as required by local codes. The small, low profile box is easy to install and contains a sleek grille for a clean finish. Its integral test cap is an industry first. Box Dimensions: 3.625-inch length x 5.875-inch width x 7.125-inch height; Grill dimensions: 8-inch x 6.625-inch. Includes one-piece snap-on grille. Recessed Box can be used with Mini-Vent, Tec-Vent or Redi-Vent Air Admittance Valves. Review: Saves a lot of work by not needing to go thru the attic roof vent - I had to move a bathtub drain and needed a way to vent it, I didn’t want to notch-cut thru 3 joints that would be located under the bathtub as it would weaken them, and an island-tub full of water with occupant is extremely heavy. This valve was my saving grace, It works perfectly and if your handy installation is relatively easy. It is well made and the wall box is just what I needed. Just make sure the vent is slightly above the bathtub overflow (or higher) so if the main drain gets completely blocked (rare occurrence) the water won’t be able to rise higher then the vent backup through the valve. The valve is designed to keep sewer gas out, it is not designed to stop water. Review: Incompatible con tuberia de mexico - Cumple su funcionalidad, pero no es compatible con las tuberías PVC de méxico, tuve que buscar un adaptador y aun así quedó flojo y tuve que rellenar la junta con espuma ## Features - For Mini-Vent Redi-Vent and Tec-Vent only - Includes a one-piece snap-on grille - Recess box carries UPC and ICC listings - Allows access to studor air admittance valves ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | IPS Corporation | | Item model number | 20381 | | Product Dimensions | 10.8 x 10.8 x 18.29 cm; 158.76 g | | ASIN | B00FQEX7DM | ## Images ![Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill - Image 1](https://m.media-amazon.com/images/I/61hL-ykbH9L.jpg) ![Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill - Image 2](https://m.media-amazon.com/images/I/61R8fsqPQNL.jpg) ![Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill - Image 3](https://m.media-amazon.com/images/I/51f4upk1KRL.jpg) ![Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill - Image 4](https://m.media-amazon.com/images/I/71kWEX5OczL.jpg) ![Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill - Image 5](https://m.media-amazon.com/images/I/61VaR7kuMJL.jpg) ## Questions & Answers **Q: What size is the inlet?** A: The inlet fits a 2" studor. **Q: can it be use in 2x3 stud wall** A: It is 2 3/4" from the back of the enclosure to the back of the drywall flange. So the answer would no. You could flange it out if you had to make it work. **Q: what is the diameter of the bottom hole of the recessed box? 1.5” or 2” and is it threaded?** A: Both, 2&1.5”, 2” pipe slips over the connector and 1.5 slides inside of the connector of the box. No threads, it is for solvent connections. **Q: does this come WITH the air admittance valve as shown in the picture? is that for 1 1/2 drain vent, or 2"?** A: Mine came with everything shown; air admitance valve, mounting box, and the cover plate. Was a 2” kit as it was what I needed. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Saves a lot of work by not needing to go thru the attic roof vent *by J***O on 6 April 2026* I had to move a bathtub drain and needed a way to vent it, I didn’t want to notch-cut thru 3 joints that would be located under the bathtub as it would weaken them, and an island-tub full of water with occupant is extremely heavy. This valve was my saving grace, It works perfectly and if your handy installation is relatively easy. It is well made and the wall box is just what I needed. Just make sure the vent is slightly above the bathtub overflow (or higher) so if the main drain gets completely blocked (rare occurrence) the water won’t be able to rise higher then the vent backup through the valve. The valve is designed to keep sewer gas out, it is not designed to stop water. ### ⭐⭐ Incompatible con tuberia de mexico *by C***N on 10 April 2023* Cumple su funcionalidad, pero no es compatible con las tuberías PVC de méxico, tuve que buscar un adaptador y aun así quedó flojo y tuve que rellenar la junta con espuma ### ⭐⭐⭐⭐ Don't know yet *by A***R on 16 September 2018* I have not installed it yet but i do like the look and way it works will update the review when installation is complete later G ## Frequently Bought Together - Studor 20381 Redi-Vent Air Admittance Valve with Recessed Box and Grill, White - Studor 20380 Recessed Air Admittance Valve Box and Grill - 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/401474754-studor-20381-redi-vent-air-admittance-valve-with-recessed-box](https://www.desertcart.sk/products/401474754-studor-20381-redi-vent-air-admittance-valve-with-recessed-box) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-11*