Thermwell UDB36BR Universal Door Bottom 1.75x36 Brown

Product Description

The THERMWELL UDB36BR is a universal door bottom seal designed to reduce drafts, dust, and moisture infiltration at the base of interior and exterior doors. Measuring 1.75 inches wide by 36 inches long and finished in brown, this door bottom installs on both metal and wood doors, making it a versatile stock item for residential service calls and light commercial applications. Installers use it to restore weathertight performance where worn or missing door bottom seals are causing comfort or energy-efficiency complaints. Each unit ships individually and is available in a package quantity of 12, suited for multi-unit or bulk service work.

The UDB36BR is appropriate for residential and light commercial door applications where a field-cut, universal-fit solution is needed. It works on standard metal or wood door bottoms and is a common replacement during weatherization upgrades, rental unit turnover, or routine maintenance calls. Its brown finish blends with common door and threshold finishes found in residential construction.

Key Features

• Universal fit for both metal and wood doors
• 1.75 inches wide by 36 inches long — field-trimmable to door width
• Brown finish suits standard residential door and threshold colors
• Reduces draft, dust, and moisture infiltration at the door base
• Available in a package quantity of 12 for bulk or multi-unit work

Compatibility

Designed as a universal-fit replacement door bottom for standard residential and light commercial metal or wood doors.

Installation Notes

Installation is typically performed by a general contractor, handyman, or weatherization technician. The door bottom can be trimmed to the exact door width using a hacksaw or tin snips before fastening. Secure the door with a door stop or wedge before attaching the seal to ensure accurate alignment. Verify the installed seal makes consistent contact with the threshold without binding the door swing.