Mayne 5825-ES Polyethylene Planter, Espresso Beautiful new England design adds a charming touch to any patio or deck. Our melded plastic planters are made from 100% high-grade polyethylene This planter features a double wall design creating a water reservoir Outside dimensions: 20"L x 20"W x 20"H. Inside dimensions: 15.5"L x 15.5"W x 13"d 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