Specifications include, but are not limited to: Shall be durable, collapsible, reusable, and easy to use. Fold flat for storage when not in use, to include straight sidewall, base pad, cart base with casters, hand hole inserts, nylon cable ties. Overall size, 39 ½” x 28 ½” x 35”. A. Sidewalls Size: 39”L x 28” W x 30”H, 10mm polypropylene honeycomb, lift off and fold flat for storage. The sidewalls must be fold into one piece. Sidewalls shall not be free-standing, adhered, glued, screwed, or riveted. Inside usable space: 38”L x 27”W x 30”H, (18 cu ft). Sidewall weight shall be a minimum of 17lbs. B. Cart Base: 39”x28”x2’ Aluminum frame with polypropylene honeycomb base pad and 3” swivel casters for easy pushing, weight should be a minimum of 17 lbs. C. Base Pad: 10mm polypropylene honeycomb (rivets onto cart frame). D. Swivel Casters: 3” Urethane Polypropylene, non-marking, 250 lbs. capacity per caster. E. Hand Hole Inserts: Inserts 4 ½” wide on the sidewalls to give a smoother grip. F. Durability – Shall be a minimum weight 225 lbs