---
product_id: 39016093
title: "USA 6RSX3X4068 Insul-Sheet, 3/4\" x 3' x 4', 12 sq. ft., Flat Sheet"
brand: "k-flex"
price: "€ 128.35"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/39016093-usa-6rsx3x4068-insul-sheet-3-4-x-3-x-4
store_origin: SK
region: Slovakia
---

# Superior moisture vapor resistance Greenguard low VOC certified Extreme temp range -297°F to 220°F USA 6RSX3X4068 Insul-Sheet, 3/4" x 3' x 4', 12 sq. ft., Flat Sheet

**Brand:** k-flex
**Price:** € 128.35
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, stay dry, stay ahead with USA Insul-Sheet!

## Quick Answers

- **What is this?** USA 6RSX3X4068 Insul-Sheet, 3/4" x 3' x 4', 12 sq. ft., Flat Sheet by k-flex
- **How much does it cost?** € 128.35 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/39016093-usa-6rsx3x4068-insul-sheet-3-4-x-3-x-4)

## Best For

- k-flex enthusiasts

## Why This Product

- Trusted k-flex brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Generous Coverage:** 12 sq. ft. flat sheet designed for efficient, seamless insulation
- • **Eco-Friendly Assurance:** Greenguard certified for healthier indoor air quality
- • **Condensation Control Mastery:** Keeps your space dry and mold-free with advanced vapor resistance
- • **Unmatched Thermal Resilience:** Performs flawlessly from arctic chills to summer heat
- • **Versatile Application Options:** Choose between skin-two-side or factory-applied PSAG for easy installation

## Overview

The USA 6RSX3X4068 Insul-Sheet is a 3/4" thick, 3' x 4' flat insulation sheet offering 12 sq. ft. of coverage. Engineered for extreme temperature ranges from -297°F to 220°F, it features superior moisture vapor resistance and condensation control. Available with skin-two-side or factory-applied PSAG, it’s Greenguard certified as a low VOC material, ensuring eco-friendly, high-performance insulation for professional-grade building projects.

## Description

USA 6RSX3X4068 Insul-Sheet, 3/4" x 3' x 4', 12 sq. ft., Flat Sheet

## Features

- Moisture Vapor Resistance
- Condensation Control
- Available as S2S (skin-two-side) or with factory-applied PSA
- Greengard certified as a low VOC material
- Temperature range: -297°F to 220°F (-182°C to 104°C)

## Product Details

- **Brand:** K-FLEX
- **Material:** Closed Cell Flexible Elastomeric Foam Insulation
- **Color:** Black
- **Product Dimensions:** 48"L x 0.75"W
- **Nominal Wall Thickness:** 0.75 inches
- **Outside Diameter:** 0.75 Inches
- **Item Length:** 48 Inches
- **UPC:** 658250702528 658250702559 658250702757 658250702542 658250702740 658250702535 658250702566 658250702511
- **Manufacturer:** Kflex

## Images

![USA 6RSX3X4068 Insul-Sheet, 3/4" x 3' x 4', 12 sq. ft., Flat Sheet - Image 1](https://m.media-amazon.com/images/I/51CuX+Oce+L.jpg)

## Questions & Answers

**Q: How elastic is this foam?**
A: The 3/4" so called K-Flex sheet that arrived on my doorstep is far too stretchy to suit me. I went by the other guys comment who said it was not stretchy, well either he was wrong or they sent me the wrong product. This stuff looks & feels to my like Wet Suit Neoprene without the nylon fabric  outer layers. I would describe it as very stretchy, the 37" width will stretch to 40" without much trouble.  I hope this is Kflex because Neoprene operational temperatures are too low for my use. Kflex has higher operational specs. The crease from folding & the rolling into a box has not come out after a week laying flat. This crease made about a 1/8" indent about 1" wide in the 3/4" thickness.

**Q: How spongy is this foam? I need something for a Kydex press. I'd be gluing 2 pieces together for the top and bottom.**
A: I am not sure what a kydex press is... but this is more a memory foam,  it gives enough top cushion, you might be able to smash it down to half its width if I had to guess.   Used it has a pad for knees when tiling floors...  make better then even the best knee pads on the market!

**Q: Can i place this inside an hvac duct to decrease noise?**
A: You can but you will have to glue it down. I recommend it on the outside because if this gets wet it acts like a sponge and you will grow mold on it

**Q: can I use this to stuff into open spaces in between screen doors?**
A: Should work provided opening isn't larger than k-flex & provided you can stuff it in.

## Frequently Bought Together

- K-FLEX Insulation Foam Sheet 3/4" x 3' x 4'
- EZARC Carbide Hole Cutter Heavy Duty for Stainless Steel, 3/4 Inch 19mm

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**Shop now:** [https://www.desertcart.sk/products/39016093-usa-6rsx3x4068-insul-sheet-3-4-x-3-x-4](https://www.desertcart.sk/products/39016093-usa-6rsx3x4068-insul-sheet-3-4-x-3-x-4)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-22*