This 4 pack of post extenders is designed to mount the Zippity Outdoor Shower (ZP19009) into the ground. Connect the post extenders to the shower posts, dig 24in holes, sink the extended posts into the ground and pour concrete. The end result is a sturdy and secure outdoor shower.-DIMENSIONS: These posts measure 58"H x 3.35"W (4 Posts in one box)-COMPATIBILITY: Designed to install the Zippity Hampton Outdoor Shower (ZP19009) into the ground-GREEN INITIATIVE: We are proud to announce that our vinyl is made up of recycled PVC that is reprocessed, reinforced, and repurposed, reducing the carbon footprint to then create the cutting-edge designs Zippity Outdoor Products are known for while helping to sustain a greener environment.-TOOLS NEEDED: Requires a shovel, level and concrete for installation-DURABLE: Made from premium, weather-resistant vinyl (PVC)-10-YEAR WARRANTY: We are proud to offer a 10-year warranty on all our vinyl products. We provide a manufacturer''s warranty that covers the cracking, splintering, or yellowing of our vinyl products when exposed to normal weather conditions (See Warranty PDF for complete details)