















🧱 Seal smarter, not harder — your gap-filling game changer!
The M-D Building Products 71464 Backer Rod is a 3/8-inch diameter, 20-foot gray foam rod designed to fill medium gaps and joints. Made from durable, weather-resistant rubber foam, it provides a reliable base for caulking, enhances insulation, and prevents drafts and moisture intrusion. Easy to install and trim, it’s perfect for both indoor and outdoor weatherization projects, ensuring long-lasting protection and improved home comfort.





| ASIN | B000BQS90G |
| Are batteries included? | No |
| Brand | M-D Building Products |
| Colour | Gray |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,522) |
| Date First Available | 25 April 2019 |
| Generic Name | MD Building - 71464 - 2pk |
| Global Trade Identification Number | 00043374714647 |
| Included Components | MD Building - 71464 - 2pk |
| Item Dimensions LxWxH | 35.6 x 20.3 x 5.1 Centimeters |
| Item Form | Foam |
| Item Height | 2 Inches |
| Item Weight | 17 g |
| Item Width | 8 Inches |
| Item model number | 71464 |
| Manufacturer | M-D Building Products |
| Material | Rubber |
| Model number | 71464 |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Product Dimensions | 35.56 x 20.32 x 5.08 cm; 17.01 g |
| Surface Recommendation | wall |
| UPC | 043374714647 |
| Water Resistance Level | Waterproof |
B**S
Great for posting my Dobermans ears thanks x
A**E
worked perfectly
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.
D**I
Made up 20F difference before and after. I inserted this into a narrow gap between baseboard and floor. Wish I could've got 0.5', but a couple of go for this worked perfectly as well.
Trustpilot
2 days ago
1 day ago