Adjustable fit for diverse door types Height and width are adjustable to accommodate French doors, pocket doors, bifold doors, steel framed doors, fire doors, and barn doors. Lets you lower the door by 11/32 inches or raise it by 13/8 inches for precise alignment. Easy solo installation Designed for a single installer. Four 360° rotating wheels with brakes provide smooth movement and secure positioning during installation. Strong and durable construction Triangular reinforcements at each corner reduce distortion and improve load handling. Each tool supports up to 500 pounds, for a total capacity of 1000 pounds. Rounded, welding eliminates sharp edges for safer handling. Simplified setup process Oneperson adjustments eliminate the need for traditional twoperson installations. Ready to use immediately, with four 360° rotating wheels for effortless maneuverability. Use scenarios Renovating a home with French or barn doors: achieve precise ground clearance and alignment in a singleperson installation, even on uneven flooring. Upgrading a small space with a pocket or bifold door: quick, easy setup without coordinating multiple people. Installing heavy doors in workshops or commercial settings: handle steel framed or fire doors up to 1000 pounds total, with secure wheeled mobility during positioning and installation.