Exterior door hardware encompasses the functional and decorative components used to secure and operate entryways, typically including handlesets, deadbolts, knobs, and hinges. High-quality hardware balances security weather resistance, and aesthetic appeal,Bumper Seal Threshold: Features a flexible vinyl or rubber "bumper" that compresses against the door face. This is often the best choice for achieving an airtight, weather-resistant seal. Saddle Threshold: A raised, rounded "hump" usually made of metal. It is durable for high-traffic areas and typically paired with a door sweep. Thermal Break Threshold: Specifically designed for extreme climates, it contains a plastic or vinyl divider that prevents heat or cold from transferring through the metal, reducing condensation. Adjustable Threshold: Includes a cap or riser that can be raised or lowered with screws to ensure a tight seal even if the house shifts or the door sags. Low-Profile / ADA Threshold: A flatter design with a gradual incline, ideal for wheelchair accessibility or reducing tripping hazards.