Mayne 4833-C Nantucket Polyethylene Planter, Clay Single wall melded design, made with 100% high-grade polyethylene Self watering tray insert creates sub-irrigation water system and encourages root growth The tray can be reversed to support a potted plant or removed so the planter can be completely filled with soil Drainage holes to be pre-drilled by customer depending on desired use of the planter Outside Dimensions: 16"L x 16"W x 32"H. Opening Dimension: 10.5in x 10.5in The weather-proof and ultra-tough construction allows you to enjoy your window box all Year long with very little winter preparation 15 Year Warranty - Residential Application, 5 Year Warranty - Commercial Application Made in the USA