








🛠️ Seal smarter, save bigger – the ultimate caulk saver for flawless finishes!
The M-D Building Products Versatile Gray Foam Backer Rod is a 3/8-inch diameter, 20-foot long closed-cell polyethylene foam rod designed to fill large gaps and expansion joints. Made in the USA, it provides a durable, non-absorbent surface that enhances caulking efficiency and insulation in concrete, driveways, sidewalks, and window or door cracks. Highly rated for its ease of use and reliable performance, it’s a must-have for professional-grade weatherization and sealing projects.










| ASIN | B000BQS90G |
| ASIN | B000BQS90G |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,387 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #164 in Hardware Sealers |
| Color | Gray |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,527) |
| Customer reviews | 4.6 4.6 out of 5 stars (1,527) |
| Date First Available | 17 August 2012 |
| Date First Available | 17 August 2012 |
| Department | Unisex-Adult |
| Included components | MD Building - 71464 - 2pk |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 17 g |
| Item model number | 71464 |
| Item model number | 71464 |
| Manufacturer | M-D Building Products |
| Manufacturer | M-D Building Products |
| Material | Rubber |
| Measurement System | US |
| Number Of Pieces | 1 |
| Part number | 71464 |
| Pattern | Solid |
| Product Dimensions | 35.56 x 20.32 x 5.08 cm; 17.01 g |
| Product Dimensions | 35.56 x 20.32 x 5.08 cm; 17.01 g |
| Shape | Round |
| Size | 20 Ft. |
| Specification met | Non-absorbent, Closed-cell Polyethylene Pre-caulking Material |
| Style | Backer Rod |
B**S
Great for posting my Dobermans ears thanks x
M**N
Stuffs easily into door and window cracks to provide insulation in irregular sized gaps. And works well as intended caulk saver for large cracks.
M**Y
Sometimes caulking or spray foam is not appropriate for the job, and is an excellent permanent base fix prior to caulking. Creates no pressure on door and window frames
A**W
Did exactly what it was designed to do.
A**E
worked perfectly
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