Flower Window Boxes is a US-based manufacturer of state-of-the-art window flower boxes, deck railing flower boxes and outdoor planters for residential and commercial use. We build our window boxes, planters and window shutters in a variety of styles and sizes to fit various home exterior designs. Our main line of products are PVC window boxes that boast a solid, durable construction and require minimum maintenance due to their versatility and optional self-watering reservoirs. All of our PVC products are made to last and backed with a lifetime warranty.