Door Bottom Seal for 1-3/4″ Doors – 36″ Aluminum U-Shape Under-Door Threshold

Upgrade your door’s weather protection with this robust aluminum U-shaped door bottom, designed specifically for 1-3/4″ thick doors and a 36″ sweep. The corrosion-resistant silver aluminum body houses a durable vinyl seal that blocks drafts, moisture, dust and insects. Adjustable screw slots and included mounting hardware make installation quick and precise—just cut to length with a hacksaw and you’re ready to enjoy a tighter, more energy-efficient seal.

Ideal for both residential and light commercial settings, this under-door threshold delivers long-lasting performance, low maintenance, and a sleek finish that complements virtually any door style.

Key Features

• Corrosion-resistant aluminum frame with silver finish
• Flexible vinyl seal provides a tight barrier against drafts, moisture, dust and bugs
• U-shape profile slides over the bottom of your door for a snug fit
• Oval screw slots allow easy adjustment for a perfect seal
• Includes all mounting screws; cut to size with a standard hacksaw
• Fits standard 1-3/4″ door thickness and 36″ door width

⚠️ WARNING: This product can expose you to Vinyl chloride known to the State of California to cause cancer and Lead known to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.