Large Base for Cantilever Umbrella

【High Weight Capacity】The panel measures 22.8" (L) x 22.8" (W) x 4.7" (H) and weighs 220lbs when filled with water and 310lbs when filled with sand, keeping your patio umbrella upright even in high winds. 【Easy to fill water spout】Each panel has a water fill spout and a twist-off lid, creating a watertight seal for quick and easy refilling, ballast disposal and repositioning 【Easy to Assemble】Stabilize the patio umbrella by snapping the 4 pieces of base into the crossbar base 【Heavy duty and weather resistant】Made of HDPE plastic to withstand impact and constant movement with weather resistant coating 【Must have】Provides a solid anchor for compatible umbrellas and protects them from accidental damage caused by drops and inclement weather;