Doe, Round Post Cap (4x4 Round Post Size) Zinc Primer (Optional - Added Rust Prevention):No thanks 11" x 11" overall dimensions

11" x 11" overall dimensions window cutout should be approximately 8" x 8"

and True 6x6 post caps is 10" (H) x 6" (W)

River Life Metal Word Sign

But enough about the toughness of this shelf

5” S Scroll Heavy Duty Shelf Bracket - Sold individually

Doe, Round Post Cap (4x4 Round Post Size) Zinc Primer (Optional - Added Rust Prevention):No thanks 11" x 11" overall dimensionsDoe, Round Post Cap (4x4 Round Post Size) Size Height 4" x Width 4" Please measure your posts before ordering. These post caps are considered custom because of the randomness of sized in round posts. For that reason, these post caps are non refundable and non exchangeable. Made of heavy duty steel and wrought iron hand welded construction. Finished in a variety of colors in a high quality powder coat paint with UV inhibitors to prevent fading. Post