BEAUTIFIES & PROTECTS WeatherPRO Post Caps solid cast aluminum caps give a classy look to your fence, deck, dock, etc. with an easy-to-install pyramid cover designed to fit all standard 3.5" x 3.5" (4x4 nominal) pressure treated posts. Matching screws are included. Dresses up your mailbox and lamp post too! These pyramid post tops protect your posts from rain and sun to prevent premature rotting! Price shown is for a 10 pack of Gloss Black Powder Coated Aluminum caps. These heavy-duty post caps are die cast of thick, heavy aluminum and will not crack, shrink, fade, warp or deteriorate like other materials will in the sun, rain or snow. Why buy plastic when you can install aluminum? GUARANTEE WeatherPRO Post Caps stands behind all products with a Lifetime, No-Questions Warranty! Our aluminum caps cost more but greatly outlasts and outperforms plastic, wood, vinyl and resin caps. Dimensions: Outside measurement of post cap is 4.1 inches square and approx. 1.5" high. Inside cap measures 3.625" x 3.625". Top of pyramid cap will extend approx. 3/4" above top of post when installed. Simple 2 screw installation! These post cap multi-packs are currently on sale. Put them in your cart and order today! Available in 4-Packs and single packs also as well as Gloss White!