--- product_id: 42783892 title: "Duct Insulation, 1In x 24In x 48In" brand: "johns manville intl" price: "€ 770.91" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.pt/products/42783892-duct-insulation-1in-x-24in-x-48in store_origin: PT region: Portugal --- # 1" thick, 24"x48" board for precise, easy installation Temp range -32°F to 450°F for extreme conditions R-Value 4.3 for superior thermal defense Duct Insulation, 1In x 24In x 48In **Brand:** johns manville intl **Price:** € 770.91 **Availability:** ✅ In Stock ## Summary > 🛠️ Insulate like a pro — keep your ducts cool, dry, and efficient! ## Quick Answers - **What is this?** Duct Insulation, 1In x 24In x 48In by johns manville intl - **How much does it cost?** € 770.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/42783892-duct-insulation-1in-x-24in-x-48in) ## Best For - johns manville intl enthusiasts ## Why This Product - Trusted johns manville intl brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built for Extremes:** Operates flawlessly from freezing -32°F to scorching 450°F - • **Vapor Barrier Ready:** Foil Scrim Kraft jacket prevents moisture intrusion, protecting your system - • **Precision Fit & Finish:** Square corners and 1" thickness deliver a sleek, professional look - • **Effortless Installation:** Cuts cleanly with a utility knife and secures easily with fasteners or adhesive - • **Thermal Shielding Mastery:** High R-value 4.3 ensures energy efficiency and cost savings ## Overview This 1" thick fiberglass duct insulation board (24"x48") from Johns Manville offers a robust R-value of 4.3, designed to perform in temperatures ranging from -32°F to 450°F. Featuring a durable Foil Scrim Kraft vapor barrier jacket and square edges for a polished finish, it meets multiple ASTM and UL standards, ensuring top-tier thermal protection and moisture resistance for HVAC systems. ## Description Duct insulation for systems that operate below ambient temperatures and where a vapor barrier is required. Insulation has square corners for a finished appearance on duct and equipment systems. Cuts easily with a utility knife and can be secured with mechanical fasteners or adhesive. Item: Duct Insulation Type: Board Duct Insulation Material: Fiberglass Density: 3 lbs. Duct Insulation Width: 24" Duct Insulation Item: Duct Insulation Duct Insulation Length: 4 ft. Jacket Material: Foil Scrim Kraft Duct Insulation Color: Silver Thickness: 1" Approx. R Value: 4.3 Temp. Range: -32 to 450 F Unfaced Side, -32 to 150 F Faced Side Standards: ASTM C612, Type IA, ASTM C612 TypeIB, ASTM C553 Type III, HH-I-558C, HH-I-558B, ASTM E-84, NRC 1.36, MIL-I-24244C,UL723, NFPA255,ASTM C795, ASTM C1136 ## Features - Price For: Each Material of Construction: Fiberglass Standards: ASTM C612, Type IA, ASTM C612 TypeIB, ASTM C553 Type III, HH-I-558C, HH-I-558B, ASTM E-84, NRC 1.36, MIL-I-24244C, UL723, NFPA255, ASTM C795, ASTM C1136 Item: Duct Insulation Length: 48" Type: Board Width: 24" Temp. Range: -32 to 450 F Unfaced Side, -32 to 150 F Faced Side Jacket Material: Foil Scrim Kraft Thickness: 1" - Density: 3 lbs. Approx. R Value: 4.3 Color: Silver Country of Origin (subject to change): United States ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00DBSA2S8 | | Brand Name | JOHNS MANVILLE INTL | | Coverage | Approximately 79.5 square feet (for a package of 10 boards) | | Customer Reviews | 4.6 4.6 out of 5 stars (72) 4.6 out of 5 stars | | Item Dimensions L X W | 48"L x 24"W | | Item Thickness | 1 inches | | Item Weight | 4 pounds | | Manufacturer | CAI - JOHNS MANVILLE | | Manufacturer Part Number | 17615 | | Material Type | Fiberglass | | Recommended Uses For Product | Thermal insulation in HVAC ducts, High-temperature applications | | Unit Count | 1 Count | | Upc | 696333175272 | ## Images ![Duct Insulation, 1In x 24In x 48In - Image 1](https://m.media-amazon.com/images/I/71EMbFf-VhL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to install *by on Reviewed in the United States March 8, 2024* Used on HVAC ductwork. ### ⭐⭐⭐⭐⭐ Product as described *by on Reviewed in the United States May 5, 2020* Package individually even though I ordered several. Two of the packages came with damaged corners and panel inside was a little damaged but still usable after reinforcing with aluminum tape. ### ⭐⭐⭐⭐ Shipper's handling of product was careless. *by on Reviewed in the United States August 23, 2021* Used it for insulating a package A/C unit. The thickness was a more generous 1 1/2 inch. Check if you have the clearance to use it. Other wise it did the job. --- ## 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.pt/products/42783892-duct-insulation-1in-x-24in-x-48in](https://www.desertcart.pt/products/42783892-duct-insulation-1in-x-24in-x-48in) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-30*