Universal Compatibility - Designed to accommodate a broad spectrum of door types including French, pocket, bi-fold, steel frame, fire, and barn doors. Adjustable height and width settings fit doors from 1-10/32 in to 30/32 in wide, with door height adjustable from 11/32 in down to 1-3/8 in up, ensuring a perfect fit for diverse installation requirements. Effortless Solo Installation - Enables a single person to complete a hands-free installation. Four 360 degree rotating wheels with brakes provide enhanced maneuverability and secure positioning during setup. Superior Durability - Triangular reinforcement at each corner resists deformation and increases load bearing. Each component is rigorously tested to support up to 500 pounds (1000 pounds collectively), guaranteeing strength for heavy-duty applications. Complete Kit - Arrives ready for immediate use without the need for additional accessories. This all-inclusive door panel cart is designed for straightforward and efficient installation, saving time and effort. Use scenarios - Residential projects involving French, barn, or other compatible doors, where one-person setup and precise fit streamline the installation. - Heavy doors in home studios, workshops, or small offices, benefiting from high load capacity and smooth wheel maneuverability. - Commercial installations with steel frame or fire doors, enabling quick one-person setup and minimizing downtime.