Built with E1 MDF boards and an SPCC carbon steel frame, these storage shelves hold up to 600 lbs per shelf and 3000 lbs total. Store heavy tools, equipment, and spare parts with great confidence. The 5-tier garage shelving features adjustable shelf heights with gourd-shaped slots, so you can customize spacing as needed. Store tall and short items easily while making better use of every inch of vertical space.This storage shelf is designed with a snap, on design, these heavy duty storage shelves go together without screws or nuts, making it an essential storage solution for any home, garage, or workshop.This storage shelf is built with e 1 MDF boards and an spcc carbon steel frame, these storage shelves hold up to 600 lbs per shelf and 3000 lbs total, making it an essential storage solution for any home, garage, or workshop.The 5 tier garage shelving features adjustable shelf heights with gourd, shaped slots, so you can customize spacing as needed, one rack, multiple setup options for a more flexible storage solution.A rubber mallet and a pair of gloves are included, the tight, fitting structure allows a quick one person setup, making it an essential storage solution for any home, garage, or workshop.Store heavy tools, equipment, and spare parts with great confidence, store tall and short items easily while making better use of every inch of vertical space, this garage shelving unit can be split into 2 independent short units for low clearance spaces, or placed side by side as a work surface.