M-D Building Products 71464 Backer Rod For Gaps and Joints, 3/8-by-20 Feet, Gray
Product ID: 146700517
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✂️Easily trim to size for custom fit
🌦️Weather-resistant for indoor/outdoor durability
🛠️3/8-inch diameter for precise gap filling
Frequently Bought Together
Description
🔧 Seal smart, live comfortable — never let gaps steal your peace!
- PRECISION GAP FILLER - Perfect 3/8-inch thickness seals medium gaps flawlessly
- EFFORTLESS CUSTOM FIT - Trim or twist to size—installation is a breeze with no adhesives needed
- ALL WEATHER DURABILITY - Built to withstand rain, sun, and temperature swings without degrading
- MULTIPURPOSE SEAL INSULATE - Ideal for concrete joints, drafty doors, windows, and expansion gaps
- FOUNDATION FOR FLAWLESS CAULKING - Creates a sturdy base that enhances caulk adhesion and longevity
The M-D Building Products 71464 Backer Rod is a 3/8-inch diameter, 20-foot long, gray foam rod made from durable, weather-resistant closed-cell polyethylene. Designed for both indoor and outdoor use, it effectively fills medium gaps and joints, providing a reliable base for caulking that improves insulation, airtightness, and draft prevention. Easy to install and customize by trimming, it’s the essential tool for professional-grade sealing and gap filling in construction and home repair.
Specifications
| Manufacturer | M-D Building Products |
| Part Number | 71464 |
| Product Dimensions | 35.56 x 20.32 x 5.08 cm; 17.01 g |
| Item model number | 71464 |
| Size | 1 Pack |
| Colour | Black |
| Style | Backer Rod |
| Material | Vinyl, Silicone, Rubber |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Measurement System | US |
| Certification | Non-absorbent, closed-cell polyethylene pre-caulking material |
| Included Components | MD Building - 71464 - 2pk |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 17 g |
Have a Question? See What Others Asked
how many feet come in a 3 pk?
no 1/4" one? either 20 or 50ft?
can the backer rod be sliced for smaller openings?
Can his be used for exterior windows before caulking?
Reviews
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Great for posting my Dobermans ears thanks x
Great for posting my Dobermans ears thanks x
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Trustpilot
TrustScore 4.5 | 7,300+ reviews
Good experience, but the tracking updates could be better.
2 months ago
The delivery time was excellent, and the packaging was secure.
2 months ago
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