--- product_id: 16069621 title: "3437 Mastercool Cooler Pad, 40\" x 23\" x 8\"" brand: "dial" price: "£189.63" currency: GBP in_stock: true reviews_count: 8 category: "Dial" url: https://www.desertcart.co.uk/products/16069621-3437-mastercool-cooler-pad-40-x-23-x-8 store_origin: GB region: United Kingdom --- # 4800 CFM airflow capacity Precise 40" x 23" x 8" fit Heavy cellulose with anti-rot resin 3437 Mastercool Cooler Pad, 40" x 23" x 8" **Brand:** dial **Price:** £189.63 **Availability:** ✅ In Stock ## Summary > ❄️ Upgrade your cool game with the Mastercool 3437 – where durability meets breeze! ## Quick Answers - **What is this?** 3437 Mastercool Cooler Pad, 40" x 23" x 8" by dial - **How much does it cost?** £189.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/16069621-3437-mastercool-cooler-pad-40-x-23-x-8) ## Best For - dial enthusiasts ## Why This Product - Trusted dial brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Fresh & Clean Airflow:** Anti-rot agents keep odors at bay for hours of refreshing coolness - • **Effortless Installation:** Fits perfectly without extra shims or assembly - • **Optimized Cooling Power:** Grooved design ensures fast wet-out and high air velocity - • **Universal Compatibility:** Designed for MasterCool & AeroCool single inlet evaporative coolers - • **Durability Meets Performance:** Heavy cellulose pad impregnated with plastic resins for long-lasting use ## Overview The DIAL 3437 Mastercool Cooler Pad is a premium replacement pad engineered for 4800 CFM single inlet evaporative coolers. Measuring 40" x 23" x 8", it features a heavy cellulose construction treated with plastic resins and anti-rot agents to ensure long life and odor-free operation. Compatible with MasterCool and AeroCool models, it delivers fast wet-out and high air velocity for efficient cooling without complicated installation. ## Description "MASTERCOOL" REPLACEMENT COOLER PAD FOR 4800 CFM 40"W x 23"H x 8"D For single inlet evaporative coolers Grooved 4800 CFM Use on MasterCool and AeroCool coolers Heavy cellulose construction for long life Fast wet-out High air velocity Impregnated with plastic resins and anti-rot agents Boxed Review: Either compromise or start over I cut and reinstalled new filters Aplus - Cut to fit Review: Nice! - I bought this pad last season from marketplace seller "True Value Hardware Outlet" and am into my second season with them. They are working well and changing the pads made a huge difference in cooling (old pads were almost 6 or 7 years old). What I did this season though is I got one of the $4 cooler pump by-pass kits that hooks to the output of the pump and allow you to trickle a little bit of the water thru the overflow hole so that the water in the cooler changes more often and doesn't build up mineral content and prevents the pads from scaling up so fast. That should make a huge difference in how long these pads last and I'm watering my neighbor's apple trees at the same time! Those are some good apples and with more moisture it should be a good harvest this year... James ## Features - The product is easy to use - The product is highly durable - The product is manufactured in China ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000UJCCP2 | | Best Sellers Rank | #210,413 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #668 in Air Conditioner Parts & Accessories | | Brand | Dial | | Built-In Media | mattress-pads | | Color | No Color | | Cooling Method | Air | | Customer Reviews | 4.5 out of 5 stars 223 Reviews | | Enclosure Material | Specialty | | Global Trade Identification Number | 00026529343701 | | Item Dimensions L x W x H | 40"L x 23"W x 8"H | | Item Type Name | DIAL 3437 Mastercool Cooler Pad, 40" x 23" x 8" | | Item Weight | 1 Pounds | | Manufacturer | Standard Plumbing Supply | | Material | Specialty | | Mfr Part Number | 3437 | | Model Number | 3437 | | Number of Fans | 1 | | Product Dimensions | 40"L x 23"W x 8"H | | UPC | 026529343701 | | Unit Count | 1.0 Count | ## Images ![3437 Mastercool Cooler Pad, 40" x 23" x 8" - Image 1](https://m.media-amazon.com/images/I/81ueiUEOAgL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Either compromise or start over I cut and reinstalled new filters Aplus *by J***N on March 12, 2026* Cut to fit ### ⭐⭐⭐⭐⭐ Nice! *by J***L on May 16, 2013* I bought this pad last season from marketplace seller "True Value Hardware Outlet" and am into my second season with them. They are working well and changing the pads made a huge difference in cooling (old pads were almost 6 or 7 years old). What I did this season though is I got one of the $4 cooler pump by-pass kits that hooks to the output of the pump and allow you to trickle a little bit of the water thru the overflow hole so that the water in the cooler changes more often and doesn't build up mineral content and prevents the pads from scaling up so fast. That should make a huge difference in how long these pads last and I'm watering my neighbor's apple trees at the same time! Those are some good apples and with more moisture it should be a good harvest this year... James ### ⭐⭐⭐⭐ Good replacement, dimentions are accurate *by H***L on March 7, 2026* Make sure you soak this thing with a hose before you install it, and I mean soak it. If you install it there will be a terrible smell for a day or two if you only run the pump on your cooler (I made this mistake). Whatever chemicals they use to treat this filter or glue it together has a crazy strong odor. That being said I'm into my second season of using it and it's still working just fine. I recommend a calcite filter for your cooler line if you have hard water where you live. ## Frequently Bought Together - Dial 3437 Mastercool Cooler Pad, 40" x 23" x 8" - Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8" - Dial Manufacturing DIAL-40867, No Color --- ## 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.co.uk/products/16069621-3437-mastercool-cooler-pad-40-x-23-x-8](https://www.desertcart.co.uk/products/16069621-3437-mastercool-cooler-pad-40-x-23-x-8) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-22*