Algreen's Rock Look Receptacle Covers Enhance the appearance of your Yard or Garden by Covering Unsightly Items. This Faux Rock is also Ideal as a Decorative Accent in Your Garden Bed. Constructed from a Durable Polymer and able to Withstand Extreme Heat and Cold Weather Conditions. It's light weight makes it easy to lift and carry. Outer Dimensions: 21.5"H x 18"W x 16"D; Internal Dimensions: 21.25"H x 17.75"W x 15.75"D. The Usable Interior Space: For Items 12" In Height, is 9"W x 10"D and for Items 18" in Height, is 7"W x 8"D. No Assembly Required.