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REI Frost King C21H 3/8" X 20' Poly Foam Caulk Saver P12353276REI-FROC21H https://cdnimages.opentip.com/full/REI/REI-FROC21H.jpg Frost King C21H 3/8" X 20' Poly Foam Caulk Saver Manufacturer Part Number: C21HFrost KingCaulk Saver Backer Rod 3/8" X 20'Reduces the amount of caulk needed to fill large gaps. Works with virtually every type of caulk & sealant. Made of durable, resilient, moisture repellant poly foam. Just press in place, then caulk on top of it. Moisture repellent Saves expensive caulk while filling large gaps Also referred to as backer rod Additional discounts apply for this item when purchased as Bulk. 12353276 077578024288 1.0000lbs 0.00 0.00 0.00
Frost King
31.92 2025-08-07 36 In Stock

Frost King C21H 3/8" X 20' Poly Foam Caulk Saver

Brand Frost King
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UPC: 077578024288
SKU: REI-FROC21H
Unit Price: $2.66
Promo: $2.39 Save 10% when you spend $99+ on select products Mix More
Min.Order Price: $31.92 for 12 units
Quantity:
36 In Stock
*  Shipping Note: Usually ships within 5 to 6 days.
* This item must be ordered in multiples of 12.
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Product Description

Manufacturer Part Number: C21H

Frost King
Caulk Saver Backer Rod 3/8" X 20'

Reduces the amount of caulk needed to fill large gaps. Works with virtually every type of caulk & sealant. Made of durable, resilient, moisture repellant poly foam. Just press in place, then caulk on top of it. Moisture repellent Saves expensive caulk while filling large gaps Also referred to as backer rod Additional discounts apply for this item when purchased as Bulk.

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

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All REI- items are non-returnable.
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