Modern Outdoor Planter Boxes, Modern Rectangular Planter
Amazon.com : Hamilton Planter - 23.5"L x 12"W x 30.25"H - Fiberglass Planter Box - Dark Gray - Indoor/Outdoor - Drainage Holes - Commercial/Residential Use - Modern - Tall, Rectangle, Best Planter :
Large Planters | 20+ Color Options - ePlanters
Fiberglass Large Tree Planter (multiple colors and sizes) – Shop Living Gardens
Hudson Extra Long Rectangle Fiberglass Planter Box - NewPro Containers