DealNews - Compare the Best M-D Building Products Sales, Deals, and Coupons

MD Building Foam Backer Rod 3/8-inch x 20-foot for $3 + free shipping w/ Prime

Tue, 25 Aug 2026 14:46:06 -0400

Handy for filling gaps before you caulk larger joints or expansion spaces, since backer rod keeps you from wasting caulk in deep cracks. It's $2.28 off the list price at $2.93. Buy Now at Amazon

Features

Weather-resistant construction for long-lasting indoor and outdoor durability
Seals gaps to prevent drafts and dust infiltration
Creates a sturdy base for professional-grade caulking projects
Effortless push-in installation without adhesives or messy sealants
Versatile design easily trimmed to fit various joint sizes

MD Building 4" x 0.25" x 36" Aluminum Flat-Profile Threshold for $16 + free shipping w/ Prime

Sat, 22 Aug 2026 19:30:48 -0400

This threshold works well for leveling out gaps at exterior doorways or between rooms with different flooring heights, and the aluminum construction holds up to foot traffic better than vinyl options. At $15.74, that's about $20 (44%) off the $35.39 list price. Buy Now at Amazon

Features

Durable aluminum for high-traffic commercial use
UL-rated fire and smoke resistance
Energy-efficient seal stabilizes indoor temperatures
Protects against drafts, moisture, and dust
ADA-compliant low-profile wheelchair accessible design