M-D Building Products 71550 350 ft. Gray Foam Backer Rod for Small 3/8 in. Gaps and Joints
M-D Building Products 71550 350 ft. Gray Foam Backer Rod for Small 3/8 in. Gaps and Joints
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M-D Building Products

M-D Building Products 71550 350 ft. Gray Foam Backer Rod for Small 3/8 in. Gaps and Joints

4.6 stars out of 32 reviews
(4.6)|
32 ratings
M-D Building Products 71550 350 ft. Gray Foam Backer Rod for Small 3/8 in. Gaps and JointsM D Building Products 71550 350 ft Gray Foam Backer Rod for Small 3 8 in Gaps and JointsM D Building Products 38384 20 ft Gray Foam Backer Rod for Ex Large 3 4 in Gaps and JointsM D Building Products 71551 250 ft Gray Foam Backer Rod for Medium 1 2 in Gaps and JointsM D Building Products 19101 15 ft Gray Foam Backer Rod for Ex Large 3 4 in Gaps and JointsM D Building Products 71506 20 ft Gray Foam Backer Rod for Large 5 8 in Gaps and JointsM D Building Products 19100 10 ft Gray Foam Backer Rod for XX Large 1 in Gaps and JointsM D Building Products 1 2 in Gray Foam Backer RodM D Building Products 71552 150 ft Gray Foam Backer Rod for Large 5 8 in Gaps and JointsM D Building Products 71464 20 ft Gray Foam Backer Rod for Small 3 8 in Gaps and Joints
Size:350 ft. for 3/8 in. Gaps
10', Now $8.59, was $9.99
$9.99
15 ft. for 3/4 in. Gaps, Now $11.57, was $14.99
$14.99
20 ft. for 1/2 in. Gaps, $9.80
20 ft. for 3/4 in. Gaps, $17.32
20 ft. for 3/8 in. Gaps, Now $7.83, was $12.99
$12.99
20 ft. for 5/8 in. Gaps, $8.99
150 ft. for 5/8 in. Gaps, $38.74
250 ft. for 1/2 in. Gaps, Now $43.83, was $54.94
$54.94
selected, 350 ft. for 3/8 in. Gaps, $65.83

Key item features

  • Durable Material: Constructed from closed-cell foam, this backer rod offers a resilient and effective solution for various sealing needs.
  • Efficient Caulk Base: Designed to fill the empty space within large cracks and deeper joints, it significantly reduces caulk waste by providing a solid base for application.
  • Generous Dimensions: Measuring 350 feet in length and 3/8 inches in width, it is suitable for small gaps and joints, offering ample material for multiple projects.
  • Versatile Application: This gray foam backer rod is suitable for both indoor and outdoor use, providing flexibility for a wide range of sealing tasks.
  • Protective Barrier: Beyond caulk support, it effectively fills gaps to protect against drafts, moisture, dust, and insects, enhancing home comfort and integrity.
  • Simple Customization: Easily cut to the desired length using standard scissors, allowing for precise fitting in various gap sizes and configurations.
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Current price is $65.83
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives between Feb 20 - Feb 24
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Sold and shipped by etailSuperStore
4.393258426966292 stars out of 5, based on 623 seller reviews(4.4)
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4.6 out of 5 stars
stars32 ratings23 reviews
How item rating is calculated
  1. 5 stars72% (23)
  2. 4 stars22% (7)
  3. 3 stars3% (1)
  4. 2 stars0% (0)
  5. 1 star3% (1)

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Showing 1-3 of 23 reviews

Feb 9, 2026
Sheri
Item details
Size: 10'
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

Good product. would recommend.

I used the item for a different use/project than its original application. Although, I've actually used the Backer Rod for the reason it's made. The shipping could have been quicker. thx

Helpful?5G8JV0UA8WOE40745318
Jul 24, 2025
Carl
Top Reviewer
Item details
Size: 20 ft. for 5/8 in. Gaps
Sold and shipped byReliable Home Products
5 out of 5 stars review

Verified Purchase

Color matched the carpet perfectly. There was enough to fit both doorways.

Incentivized Review
Helpful?5G8JV0UA8WOE40745318
May 25, 2025
Kimberly
Top Reviewer
Item details
Size: 20 ft. for 5/8 in. Gaps
Sold and shipped byReliable Home Products
5 out of 5 stars review

Verified Purchase

we are using to put in cracks to keep cockroaches outside. seems to work pretty well so far. great product for the price.

Incentivized Review
Helpful?5G8JV0UA8WOE40745318