Our 54" Bronze-Tone Metal Window Box makes for the perfect standalone window box or liner insert for an existing window box. Made from steel and powder coated in an architectural bronze, this product will last for seasons to come. We include pre-drilled drainage holes to help prevent root rot and we offer watering solutions to help ensure that your plants are properly moistened. For a 54" window box, we recommend (2) of our 21.5" tapered reservoirs. If you choose to use this product as a standalone window box, take a look at our brackets section to find the ones that will best fit your needs. For a 54" liner, you will need (2) pairs. If you need custom sizing, please call 800-896-0978 to request a free estimate.