KC Hardware Adjustable Black Aluminum Threshold - 36 Inch | Exterior Door Threshold Extension | Heavy-Duty Waterproof Door Threshold for Doorways & Garage Doors

Price: $72.99

As of 2026-07-15 03:52:57 UTC (more info)

Product prices and availability are accurate as of 2026-07-15 03:52:57 UTC and are subject to change. Any price and availability information displayed on https://www.amazon.com at the time of purchase will apply to the purchase of this product.

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Adjustable & Versatile: Designed for a precise fit, this adjustable door threshold provides a snug seal for exterior doors, interior doors, and thresholds for doorways, improving insulation and energy efficiency while reducing drafts and moisture.

Heavy-Duty Aluminum Build: Crafted from premium aluminum door threshold material, this durable threshold extender withstands heavy foot traffic in commercial and residential spaces, resisting warping and wear over time.

Weatherproof & Waterproof Protection: Engineered to block out rain, wind, and extreme temperatures, this door threshold seal enhances insulation. Its waterproof design prevents moisture buildup, reducing the risk of mold and structural damage.

Sleek Hidden Screws for a Clean Look: Designed with concealed fasteners, this black threshold for doorways maintains a modern, seamless appearance. The hidden screws ensure a polished finish that blends with any front door threshold.

Easy Installation with Complete Hardware: Includes all necessary aluminum screws, bolts, nuts, and caps for hassle-free setup. Whether installing a new threshold strip for garage doors or replacing an exterior door replacement threshold, this kit ensures a secure, lasting fit.