M-d Building Products Black Sponge Window Seal 3/8 X 3/4 In, 10 Ft — Wide-gap Weatherproofing

Presenting the M-D Building Products 3/8 x 3/4 inch Black Sponge Window Seal, a versatile weatherproofing strip designed to bridge large gaps around windows. Made from durable PVC closed-cell sponge, this seal stays flexible and resistant to moisture and wear. Its self-adhesive backing enables a clean, tool-free install on clean, dry frames. Simply cut to length with scissors and press into place for an instant upgrade.

Better comfort and savings: This seal minimizes drafts and heat loss, helping maintain steady indoor temperatures and reduce energy bills. It also blocks dust and pests, protecting living spaces from outdoor contaminants.

• Self-adhesive backing provides quick, hardware-free installation for fast window insulation and draft protection.
• PVC closed-cell sponge material delivers durable flexibility with moisture resistance for a long-lasting window seal.
• Sized for wide gaps at 3/8 in by 3/4 in with a 10 ft length to ensure effective gap coverage on various window frames.
• Blocks drafts, dust, moisture, and insects for comprehensive weatherproofing and indoor air quality.
• Cut-to-length design lets you customize the fit for a neat, professional finish on any window opening.

Why this seal stands out: Designed for easy installation and reliable performance, it delivers consistent sealing for year-round comfort. The rugged PVC sponge maintains its shape under compression, providing a tight seal even in wide gaps. Ideal for homes, apartments, and offices seeking cost-effective weatherproofing and improved energy efficiency.