Gilbert & Bennett Canterbury 24 in. Steel Deck Rail Planter DPBCB24-B - The Home Depot
Deck Rail Planters | Flower Boxes for Railings
The HC Companies 24 Inch Wide Heavy Duty Plastic Deck Rail Mounted Garden Flower Planter Boxes with Removable Drainage Plugs, White (2 Pack) : Amazon.ca: Patio, Lawn & Garden