--- product_id: 612990767 title: "20 x 20 inches" brand: "byson" price: "2472 DH" currency: MAD in_stock: false reviews_count: 13 category: "Byson" url: https://www.desertcart.ma/products/612990767-20-x-20-inches store_origin: MA region: Morocco --- # 20 x 20 inches **Brand:** byson **Price:** 2472 DH **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** 20 x 20 inches by byson - **How much does it cost?** 2472 DH with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/612990767-20-x-20-inches) ## Best For - byson enthusiasts ## Why This Product - Trusted byson brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Byson Gravity Grille Anodized Aluminum with Gravity Shutter 20 x 20 inches – Weatherproof Ventilation for Walls and Crawl Spaces - desertcart.com Review: works well and doesn't leak - Mine came without any space near the top leading to rain incursion, like was complained about in some of the reviews . . all the blades move freely, and don't bump into each other or the frame . . I like the frame, lotsa possibilities to mount without a hassle, the cast blades seem more durable than pressed sheet metal, and the small amount of extra weight is nice when the wind blows at JUST the wrong angle to try and lift 'em . . . we get kinda whippy-windy in the "Authentic Northwest", which can leave you up at night and cranky, so when the blades don't flop, I sleep better . . . . Review: Perfect replacement vent cover! - This grill is a total winner. I was struggling to find a vent that could fit a large hole in the siding after removing a relic of a vent from a 1920"s flip. I went to several local hardware stores, home depot and lowe's included to find a vent that was gravity assisted (in that when my tenants turned it off, it would close and not allow bugs or cold air come back in but also allow hot air from the shower and dryer escape easily. This grill had everything I was looking for including a nice, low profile design, and it was affordable. Sure beats what was there before! I installed it myself, instead of paying the fortune that I was quoted for a couple of HVAC guys to put other vents in. Do it yourself all the way!! Easy handling, light and not heavy, quiet and durable. Perfect fit! ## Features - These grilles are used on exteriors of buildings at air exhaust points in the HVAC system. The design of the grille utilizes louvers which are closed by default due to gravity. When air is exhausted through the system, it forces the louvers open for the duration of the exhaust sequence. The louvers then naturally close again with gravity, preventing any air intake. - Please note per above that this louvers are by design not fixed open or adjustable, they open with force of exhaust air and fall shut with gravity. - Versatile Applications: They can be used in various applications that require permanent large-scale ventilation combined with screening. This includes air exhaust for ventilation or air conditioning systems, plant rooms, generators, workshops, garages, and pumping stations. - Robust Construction: Crafted from durable extruded aluminum sections, featuring a sturdy 2mm thick frame and 1mm thick blades. - Anodized Aluminum : The standard finish is a aluminum anodized coating that not only protects but also enhances the aesthetic appeal with its classy design. - Installation: Self tapping screws (not included) can be used to drill directly into the grille face or neck, depending on preference, and fix it to the surface (wall or wooden frame) as required. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CLT35R3P | | Batteries Required? | No | | Best Sellers Rank | #169,081 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #977 in Registers, Grilles & Vents | | Customer Reviews | 4.4 4.4 out of 5 stars (44) | | Date First Available | October 26, 2023 | | Item Weight | 2.99 pounds | | Manufacturer | Byson | | Package Dimensions | 22.5 x 22 x 2.5 inches | | Size | 20x20 inches | ## Images ![20 x 20 inches - Image 1](https://m.media-amazon.com/images/I/611aEO0nu9L.jpg) ![20 x 20 inches - Image 2](https://m.media-amazon.com/images/I/810+Dv9+SGL.jpg) ![20 x 20 inches - Image 3](https://m.media-amazon.com/images/I/719SzG4xw4L.jpg) ![20 x 20 inches - Image 4](https://m.media-amazon.com/images/I/71njZKBUd9L.jpg) ![20 x 20 inches - Image 5](https://m.media-amazon.com/images/I/81v3EP0SCTL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ works well and doesn't leak *by I***N on April 9, 2026* Mine came without any space near the top leading to rain incursion, like was complained about in some of the reviews . . all the blades move freely, and don't bump into each other or the frame . . I like the frame, lotsa possibilities to mount without a hassle, the cast blades seem more durable than pressed sheet metal, and the small amount of extra weight is nice when the wind blows at JUST the wrong angle to try and lift 'em . . . we get kinda whippy-windy in the "Authentic Northwest", which can leave you up at night and cranky, so when the blades don't flop, I sleep better . . . . ### ⭐⭐⭐⭐⭐ Perfect replacement vent cover! *by S***E on July 16, 2025* This grill is a total winner. I was struggling to find a vent that could fit a large hole in the siding after removing a relic of a vent from a 1920"s flip. I went to several local hardware stores, home depot and lowe's included to find a vent that was gravity assisted (in that when my tenants turned it off, it would close and not allow bugs or cold air come back in but also allow hot air from the shower and dryer escape easily. This grill had everything I was looking for including a nice, low profile design, and it was affordable. Sure beats what was there before! I installed it myself, instead of paying the fortune that I was quoted for a couple of HVAC guys to put other vents in. Do it yourself all the way!! Easy handling, light and not heavy, quiet and durable. Perfect fit! ### ⭐⭐⭐⭐⭐ PERFECT *by A***R on July 25, 2025* PERFECT IT FIT AND DELIVERD ON TIME --- ## 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.ma/products/612990767-20-x-20-inches](https://www.desertcart.ma/products/612990767-20-x-20-inches) --- *Product available on Desertcart Morocco* *Store origin: MA* *Last updated: 2026-05-13*