Keter Manor 6 x 8ft Garden Storage Shed - Grey (15-Year Guarantee). Keter Manor Garden Shed Plastic 6 x 8ft Lockable Dble Doors 15 Year Guarantee. Size Imperial: 6 ft x 8 ft. External Area Coverage: 3.9m2. Internal Area Coverage: 7.6m3. Required Base Size: 176 x 222cm. Treatment: Just a quick wash down with water and a cloth will keep your shed looking brand new. Window Material: Polypropylene and Styrene-acrylonitrile resin. Assembly Service Required: Self assembly. Includes: Padlock hasp (lock not included). Ideal outdoor storage solution for all garden tools and equipment, ...