Thermwell UDB77 Door Sweep Draft Stop 36 Inches Brown

Product Description

The THERMWELL UDB77 is a slide-on door sweep and draft stop designed to seal the gap between the bottom of a door and the floor. It installs without tools or fasteners by sliding directly onto the door bottom. The UDB77 measures 36 inches in length and is finished in brown to blend with common door and floor combinations. It can be cut to fit narrower door widths, making it adaptable to most standard residential door sizes. This product reduces conditioned air loss, blocks cold drafts, and provides a barrier against insects entering at the door threshold.

The UDB77 is suited for residential and light commercial applications where door bottom sealing is needed. It works on all floor surface types, including hardwood, tile, carpet, and vinyl, without catching or dragging. Typical installation scenarios include exterior entry doors, utility room doors, and any interior door where draft control or pest exclusion is a priority. HVAC technicians, weatherization contractors, and general maintenance personnel commonly specify slide-on door sweeps as part of building envelope improvement work.

Key Features

• Slide-on installation requires no tools, screws, or adhesive
• 36 inches long, cuttable to fit narrower door widths
• Compatible with all floor surface types including carpet, hardwood, tile, and vinyl
• Brown finish suits common door and threshold colors
• Reduces energy loss by sealing conditioned air inside
• Provides a physical barrier against insects at the door bottom

Compatibility

Designed as a slide-on replacement or new-install door sweep suitable for most standard residential and light commercial doors up to 36 inches wide.

Installation Notes

No tools are required for installation. Slide the sweep onto the door bottom from the hinge side or latch side after removing the door if needed for easier access. If the door width is less than 36 inches, cut the sweep to length with a utility knife or tin snips before sliding it into place. Verify that the sweep does not create excessive drag on the floor surface that could interfere with door operation.