Lifetime 6ft x 3.5ft Store Unit. Lifetime 6x3.5 plastic shed is a Curved roof garden storage unit, manufactured from high-density polyethylene (HDPE) with heavy duty, powder coated steel reinforcements. This shed is not only an attractive addition to your garden, but is the ideal solution for your outdoor storage needs for gardens with limited space. The Lifetime 6x3 shed also features steel bracing throughout, a controlled spring-hinge lid, double doors and a secure locking mechanism provided as standard. These sheds are at highly competitive prices. All Lifetime garden sheds are very ...