Thermwell M13BH V-flex Weather Strip 7/8in X 17ft Brown

Product Description

The THERMWELL M13BH is a V-Flex polypropylene weather strip designed to seal gaps along doors and windows, stopping air infiltration, dust, and moisture intrusion at the perimeter. Measuring 7/8 inches wide by 17 feet long, this strip features a factory-applied adhesive backing that allows for direct bonding to door stops, jambs, and window frames without the need for fasteners. The polypropylene construction resists compression set over time, maintaining a consistent seal under repeated door and window cycles. Each unit ships individually and is available in a package quantity of 12, making it suitable for single-unit service calls or multi-unit stocking orders. The brown finish blends with standard wood and painted surfaces commonly found in residential and light commercial applications.

The M13BH is appropriate for use on interior and exterior door frames and window sashes where a flexible, adhesive-mounted seal is specified. It is well suited to residential service work, property maintenance, and weatherization projects. The V-Flex profile compresses against the mating surface to fill irregular gaps and returns to shape when the door or window is opened. Installers working on draft reduction, energy audits, or general weatherization will find this strip a straightforward replacement or new-installation option for standard door and window perimeter sealing.

Key Features

• V-Flex profile compresses to fill uneven gaps and recovers shape over repeated use cycles
• Factory-applied adhesive back allows tool-free installation on clean, dry surfaces
• Polypropylene construction resists moisture, compression set, and general wear
• 7/8 inches wide by 17 feet long covers a full door perimeter in a single length
• Brown finish suits standard wood door frames and painted jambs
• Available in a package quantity of 12 for service truck stocking or bulk weatherization jobs

Compatibility

Designed as an OEM-style replacement or new-installation weather strip for standard residential and light commercial door frames and window sashes where a 7/8-inch V-flex adhesive profile is specified.

Installation Notes

Installation is typically performed by general contractors, property maintenance technicians, or weatherization specialists. Clean and dry the bonding surface thoroughly before applying the adhesive back to ensure proper adhesion. Cut the strip to length with scissors or a utility knife and press firmly along the entire run to seat the adhesive. Avoid stretching the strip during application, as this may reduce contact and long-term bond strength.