M-d Building Products 78394 Vinyl Bulb Door Jamb Weatherstrip

Product Description

The M-D BUILDING PRODUCTS 78394 is a flexible vinyl bulb weatherstrip designed to seal gaps around door jambs and window frames. The bulb profile compresses against the door stop or sash to block air infiltration, drafts, moisture, and dust. At 0.5 inches wide and 17 feet long, a single roll covers most standard residential door openings with material to spare. Installation requires no special tools — the strip can be nailed or stapled directly to the jamb, making it a fast, field-cut solution for weatherization work on wood-frame door and window assemblies.

This weatherstrip is suited for residential door and window applications where a surface-mounted bulb seal is the appropriate profile. It is commonly installed on entry doors, interior doors requiring a draft seal, and wood-frame windows. The flexible vinyl construction allows the bulb to conform to minor surface irregularities in the jamb or stop, maintaining consistent contact across the full door height. Carpenters, general contractors, handymen, and property maintenance technicians regularly use this product during door rehab and energy-efficiency upgrades.

Key Features

• Flexible vinyl bulb profile compresses to seal air, moisture, and dust infiltration
• 0.5 inches wide — fits standard door jamb stop profiles
• 17-foot roll length covers a full door opening with material remaining for trimming
• Can be nailed or stapled for fast, tool-minimal installation
• White finish suits painted wood jambs and trim without additional finishing

Compatibility

Designed as an OEM-style replacement or new-installation weatherstrip for standard residential wood-frame door jambs and window frames where a surface-mounted vinyl bulb profile is specified.

Installation Notes

Installation is typically performed by carpenters or general maintenance trades and requires no power-down procedure. Cut the strip to length with tin snips or a utility knife, then nail or staple it flush along the door stop so the bulb contacts the door face evenly when closed. Verify that the door closes and latches without binding after installation — over-compression of the bulb can increase door-closing resistance. Follow local building energy codes where weatherstripping is a required component of an air-sealing assembly.

Technical Specifications

• Width: 0.5 inches
• Length: 17 feet
• Material: Flexible vinyl
• Color: White
• Weight: 0.585 pounds
• Unit of Measure: Each

Standard Information

• Brand: M-D BUILDING PRODUCTS
• Manufacturer Part Number: 78394