【SPACIOUS DESIGN WITH ADDED SHELF】External Dimensions: 52.3' L x 29.7' W x 38.9' H / Internal Dimensions: 48' L x 25' W x 36.5' H / 28 cubic feet capacity. Features a new removable shelf (supports 50 lbs) for organized storage of bikes, lawnmowers, trash cans, and patio accessories. Please verify dimensions for bulky items. 【ALL-WEATHER PROTECTION】Made with UV-stabilized HDPE resin that resists fading, cracking, and warping in extreme temperatures (-40 degrees F to 140 degrees F). Features a fully-sealed lid with reinforced edges and sloped roof design to prevent water accumulation, keeping contents dry year-round. 【REINFORCED DOUBLE-WALL CONSTRUCTION】Industrial-grade double-layer resin panels using advanced blow-molding technology for superior impact resistance. Eco-friendly and maintenance-free - no rust, rot, or peeling paint. Supports 300 lbs evenly distributed (shelf holds additional 50 lbs). 【ENHANCED SECURITY SYSTEM】Dual-locking mechanism includes magnetic top latch and foot-pedal operated bottom lock for hands-free access. Pre-drilled holes for optional padlock (not included). Child-safe design prevents accidental openings. 【EASY ASSEMBLY & CUSTOMIZABLE STORAGE】Includes numbered parts and illustrated instructions for quick 30-minute setup. Comes with heavy-duty impact-resistant floor panel. New removable shelf (included) creates versatile 2-tier storage for tools, bins, or smaller items. Additional shelves available separately.