Thermwell T35/36H Aluminum Door Threshold 36 Inches Heavy Duty

Product Description

The THERMWELL T35/36H is a heavy-duty aluminum door threshold designed for residential doorway installations. This low-rug-profile threshold measures 1.25 inches wide by 0.4375 inches tall by 36 inches long, making it a practical fit for standard interior and exterior door openings. The aluminum construction resists corrosion and holds up under repeated foot traffic. It installs directly on the door bottom or on top of an existing wooden threshold, giving installers flexibility depending on the condition of the existing floor transition. This part ships in a package quantity of 12 units, making it well suited for contractors completing multiple door installations on a single job.

This threshold is intended for residential use and is appropriate for doorways where a low-profile transition is needed to accommodate low-pile rugs or hard flooring on one or both sides. It works on standard hinged door assemblies and can be used at interior room transitions or at exterior door bottoms where a full-height threshold is not required. Finish carpenters, general contractors, and handymen commonly install this type of threshold as part of door hardware retrofit or new construction door finishing work.

Key Features

• Low rug profile design accommodates low-pile carpet and hard flooring transitions
• Aluminum construction resists corrosion and wear from foot traffic
• Dual installation method: mounts on door bottom or over existing wooden threshold
• 36-inch length suits standard residential door widths
• Heavy-duty classification for increased durability in high-traffic residential doorways
• Package quantity of 12 units supports multi-door contractor installations

Compatibility

Designed as an OEM-style replacement or new-installation threshold for standard residential hinged door assemblies requiring a low-profile aluminum transition.

Installation Notes

Installation is typically performed by a finish carpenter or general contractor using basic hand tools including a drill, screwdriver, and tape measure. Before installation, ensure the door is fully closed and the existing threshold or subfloor surface is clean, flat, and free of debris. If installing over an existing wooden threshold, verify the combined height does not interfere with door swing clearance. Follow local building codes for door threshold requirements, particularly at exterior openings subject to weather sealing standards.