Amazon.com : 10 Pcs Plastic Planter Liners Clear Rectangular Plastic Liners for Flower Box Planter Window Box Planter 16.2" L x 3" W x 3.5" H for Indoor Outdoor Flower Arrangement Succulent
LINER WINDOW BOX 3'
Planter Liner Material - HDPE Plastic Roll - Waterproof — Pro Fabric Supply
Pennington 36 in. Plastic Window Box Liner (Case of 14) 100507831 - The Home Depot