M-D Weatherstrip Black 1/4" x 20'

Enhance the energy efficiency and comfort of your home or office with the M-D Weatherstrip. Crafted from premium black silicone, this 1/4"-thick, 20-foot gasket delivers a reliable seal around doors and windows. UL listed and rigorously tested to limit air and smoke infiltration, it maintains performance over time—even when exposed to moisture, mildew or UV light.

Designed for both indoor and outdoor applications, the flexible silicone construction remains supple in extreme temperatures, ensuring a snug, long-lasting fit. Installation couldn’t be easier—no special tools or hardware required. Simply press the weatherstrip into your door or window channel for an instant upgrade in draft protection and noise reduction.

Key Features

• UL listed silicone gasketing tested to limit air and smoke infiltration
• Resists mildew, fungus and UV degradation for lasting durability
• Flexible in extreme heat and cold—no cracking or hardening
• Easy, hardware-free installation; cuts to length with standard scissors
• Ideal for sealing gaps around doors, windows, cabinets and more

⚠️ WARNING: This product can expose you to Ethylene oxide known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.