24" Charleston-Style Deck Railing Planter for Balcony or Porch Rails
Amazon.com : The HC Companies 24 Inch Deck Railing Planter Box - Decorative Lightweight Weatherproof Plastic Plant Pot for Outdoor Balcony, Porch, Garden, Fence, White : Patio, Lawn & Garden
Suncast 24 in. Black Plastic Rail Planter (4-Pack) 2412KR - The Home Depot
Bloem 12 in. Deck Rail Plastic Planter, Terra Cotta (2-Pack) DCB-DKRMIX1 - The Home Depot
DIY Railing Planters for your Deck or Balcony - The Handyman's Daughter