Thermwell ST175 Silver Flat Top Saddle Threshold 36 in

Product Description

The THERMWELL ST175 is a silver flat top saddle threshold designed for interior doorways in residential and light commercial applications. Measuring 1.75 inches wide, 0.125 inches tall, and 36 inches in length, this low-profile threshold fits under most standard interior doors without requiring door trimming. The smooth, flat top surface creates a clean transition between flooring surfaces and eliminates tripping hazards at the doorway. Fasteners are included, making installation straightforward for contractors, finish carpenters, and experienced DIYers. At 5.4 pounds per unit, the threshold provides solid underfoot stability without excessive weight.

The ST175 is suited for interior door applications where a low-clearance, flat profile is needed between adjoining floor surfaces. It is commonly installed in hallways, bedroom doorways, closet entries, and similar interior transitions. The 36-inch length accommodates average door widths, and the silver finish coordinates with standard aluminum and metallic door hardware. The included fastener hardware eliminates the need to source separate mounting components for a typical installation.

Key Features

• Low-profile flat top design at 0.125 inches tall reduces tripping hazard at interior doorways
• 36-inch length fits average residential interior door openings
• 1.75-inch width provides stable floor-to-floor coverage
• Silver finish suits standard interior metallic door hardware
• Smooth top surface allows easy foot traffic and rolling equipment passage
• Mounting fasteners included for a complete installation package

Compatibility

Designed as a saddle threshold replacement or new installation for standard interior doorways. Fits under most average-width interior doors without modification.

Installation Notes

Installation is typically performed by finish carpenters, general contractors, or experienced DIYers. Position the threshold centered in the door opening and mark fastener locations before drilling pilot holes to prevent splitting the substrate. Ensure the subfloor or finished floor surface is clean and level before securing the threshold. No power tools beyond a drill are generally required for standard wood or concrete subfloor mounting.