---
product_id: 13192313
title: "C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray"
brand: "frost king"
price: "66 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/13192313-c21h-caulk-saver-3-8-inch-by-20-foot-long
store_origin: PL
region: Poland
---

# Waterproof 3/8-Inch Width 20-Foot Length C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray

**Brand:** frost king
**Price:** 66 zł
**Availability:** ✅ In Stock

## Summary

> Seal it, don’t feel it! 🛠️

## Quick Answers

- **What is this?** C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray by frost king
- **How much does it cost?** 66 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/13192313-c21h-caulk-saver-3-8-inch-by-20-foot-long)

## Best For

- frost king enthusiasts

## Why This Product

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

## Key Features

- • **Seal the Deal:** Effortlessly press in place to eliminate drafts and cracks.
- • **Moisture Master:** Foam design repels moisture, ensuring long-lasting performance.
- • **Lightweight Wonder:** Weighing only 0.5 ounces, it's easy to handle and install.
- • **Cushioning Champion:** Perfect for various cushioning and insulating needs around the home.
- • **Versatile Application:** Compatible with virtually all cracks and sealants for maximum utility.

## Overview

The Frost King C21H Caulk Saver is a 3/8-inch by 20-foot long foam strip designed to effectively seal drafts and cracks. Made from durable polyurethane, it is waterproof and suitable for various surfaces, including walls and sinks. This lightweight solution is perfect for both insulation and cushioning needs, making it a must-have for any home improvement project.

## Description

C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray

## Features

- Foam
- Moisture repellant
- Works with virtually all cracks and sealants
- Just press in place to seal drafts and cracks
- Has many other cushioning and insulating needs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.5 Ounces |
| Item Form | Foam |
| Color | Gray |
| Material Type | Polyurethane |
| Surface Recommendation | Walls, Sink |
| Water Resistance Level | Waterproof |

## Images

![C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray - Image 1](https://m.media-amazon.com/images/I/81ysBNZSnlL.jpg)
![C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray - Image 2](https://m.media-amazon.com/images/I/814DenE4BRL.jpg)
![C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray - Image 3](https://m.media-amazon.com/images/I/91rUe4Wc4tL.jpg)
![C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray - Image 4](https://m.media-amazon.com/images/I/71XDgidd3BL.jpg)
![C21H Caulk Saver 3/8-Inch by 20-Foot Long, Gray - Image 5](https://m.media-amazon.com/images/I/71uSQtRe-HL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Questions & Answers

**Q: Can I use this around my bathtub?**
A: It is a foam cord that is pushed into large cracks so caulk can be applied on top. Would not work for bathtub unless you have a large crack that is too large for caulk.

**Q: Does this come in white???**
A: I personally haven’t seen white, but perhaps check the Frost King site to see if that’s even an option. Thanks for your interest and sorry I couldn’t be off more help!

**Q: Would this help with soundproofing gaps?**
A: While it is not designed as a soundproofing product I do suppose that it would help to some degree in this manner.  Other products designed with soundproofing in mind however I feel would be more effective. Hope this helps!

**Q: What size do I need for a 1/2 in gap?**
A: If the gap has jagged edges to hold the backer rod in place, the 1/2” should work.  Otherwise you will have to use 3/4 and push it into the gap.

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**Shop now:** [https://www.desertcart.pl/products/13192313-c21h-caulk-saver-3-8-inch-by-20-foot-long](https://www.desertcart.pl/products/13192313-c21h-caulk-saver-3-8-inch-by-20-foot-long)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*