---
product_id: 51559763
title: "Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey"
brand: "frost king"
price: "R$1024"
currency: BRL
in_stock: true
category: "Frost King"
url: https://www.desertcart.com.br/products/51559763-frost-king-c21cp-c-caulk-saver-bulk-contractor-pack-3
store_origin: BR
region: Brazil
---

# Moisture-repellent durability 350 feet continuous length Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey

**Brand:** frost king
**Price:** R$1024
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smarter, save bigger — the pro’s secret weapon!

## Quick Answers

- **What is this?** Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey by frost king
- **How much does it cost?** R$1024 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/51559763-frost-king-c21cp-c-caulk-saver-bulk-contractor-pack-3)

## 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

- • **Effortless Installation:** Flexible yet sturdy foam that installs quickly without tearing or crumbling.
- • **Built to Withstand Moisture:** Water-resistant polyurethane foam keeps your seals dry and durable.
- • **Maximize Your Caulk Efficiency:** Stretch your caulk further with 350 feet of resilient foam backing.
- • **Trusted by Pros, Loved by DIYers:** Highly rated with 4.6 stars and proven to save time and money on every project.
- • **Precision Fit for Seamless Sealing:** 3/8-inch diameter designed to perfectly fill small gaps and cracks.

## Overview

The Frost King C21CP-C Caulk Saver Bulk Contractor Pack offers 350 feet of durable, moisture-resistant polyurethane foam with a precise 3/8-inch diameter. Designed to reduce caulk usage and speed up sealing jobs, it’s flexible, easy to install, and trusted by professionals and DIY enthusiasts alike for reliable, long-lasting results.

## Description

Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey

## Features

- Foam
- Saves on expensive caulk
- Works with virtually all caulk
- Moisture repellant
- Made of durable, resilient poly foam
- Easy to use and install

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016PA9VBW |
| Best Sellers Rank | #35,485 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #237 in Weather Stripping |
| Brand Name | Frost King |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (540) |
| Global Trade Identification Number | 00077578060262 |
| Included Components | Frost King - C21CP |
| Item Form | Bag |
| Item Type Name | Frost King - C21CP |
| Item Weight | 15.36 ounces |
| Manufacturer | Thermwell Products |
| Material Type | Polyurethane |
| Maximum Gap Fill | 3.8 centimeters |
| Model | Frost King - C21CP |
| Number of Items | 1 |
| Part Number | C21CP-C |
| Surface Recommendation | Walls |
| UPC | 077578060262 |
| Unit Count | 350 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Frost King
- **Color:** Gray
- **Item Form:** Bag
- **Item Weight:** 15.36 ounces
- **Maximum Gap Fill:** 3.8 centimeters

## Images

![Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey - Image 1](https://m.media-amazon.com/images/I/91TZMmHjiRL.jpg)
![Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey - Image 2](https://m.media-amazon.com/images/I/51osNC9amZL.jpg)
![Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey - Image 3](https://m.media-amazon.com/images/I/51I9NtljmDL.jpg)
![Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey - Image 4](https://m.media-amazon.com/images/I/41dwlvSinCL.jpg)
![Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey - Image 5](https://m.media-amazon.com/images/I/4138kzmhZaL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Is this waterproof?  Would like to use prior to caulking outside of my cabin**
A: It is waterproof. I would be sure to seal it with some sort of caulk afterwards though

**Q: Is this polyurethane foam?**
A: I think so

**Q: Is this closed cell backer Rod?**
A: I don't know, but it was what i needed to fill cracks.

**Q: What type tool is best for pushing this into the crevice?**
A: I am sure you can find a good tool under caulk finishing or application.  I just used my finger and the butt of a small round screwdriver.  My project was not typical.

## Frequently Bought Together

- Frost King C21CP-C Caulk Saver Bulk Contractor Pack, 3/8-inch Diameter x 350-feet Long, Grey
- Mutual Industries Standard Backer Rod, 4000 Linear Feet, 1/4"
- 1/2" Diameter x 200' Length Backer Rod Caulk Saver Foam Backer Rod for Gaps and Joints Backing Concrete Filler

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**Shop now:** [https://www.desertcart.com.br/products/51559763-frost-king-c21cp-c-caulk-saver-bulk-contractor-pack-3](https://www.desertcart.com.br/products/51559763-frost-king-c21cp-c-caulk-saver-bulk-contractor-pack-3)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-10-24*