Garden Treasures 23.75-in W x 6-in H Terracotta Plastic Traditional Outdoor Window Box in the Pots & Planters department at Lowes.com
100cm Window Box Trough Terracotta Planter For Garden Plant Pot Tray | x 2 | eBay
Amazon.com : BangQiao Small 12.20 Inch Plastic Rectangular Window Box Planter Pot Container with Saucer for Indoor and Outdoor Using, Pack of 3, Terracotta : Patio, Lawn & Garden