Durable Window Boxes: We use high quality vinyl in the manufacturing process - making our products durable, lightweight and highly shock resistant Easy to Use: Ready-to-assemble kit requires minor assembly - parts glue together easily to create a beautiful finished product (about 15 min to assemble) Customizable: These 6ft window boxes can be cut to any desired length and can be painted on - this completely customizable window box is perfect for your inner DIY-er! Innovative Design: Double-wall design makes these Yorkshire Window Boxes sturdy, and provides the roots and potting mix with adequate insulation from surrounding weather conditions Self-watering Factor: In a self-watering window box, the planting container sits directly inside the water reservoir - the water is then pulled into the potting mix through capillary action, keeping your plants watered & happy! The Mayne Advantage: Mayne offers a 15-year residential warranty or a 5-year commercial warranty on this window box - Mayne has been the top choice by the home and gardening sector in North America for over a decade Weight: 33lbs; Outside Dimensions: 72in L x 12.1in W x 10.2in H; Inside Dimensions: 65.4in L x 7.6in W x 8.4in D; Capacity: Approximately 18 gallons (68.1 liters) soil capacity and 1.5 gallons (5.6 liters) water reservoir capacity