Home > Outdoor Planters > Rectangular Planters

Rectangular Planters

Long Rectangular Planter Boxes At Flower Window Boxes TM we specialize in rectangular planters made from an architectural grade PVC. All of our PVC planters are handcrafted by carpenters from a revolutionary material that doesn't rot, crack, sag, or split. They ship fully assembled as well and come with an optional watering feature that turns them into self-watering planters. Our long rectangular planters boxes come in over 100 sizes and oblong and trough shapes and over half a dozen different styles to choose from. They can be used in a variety of outdoor applications including decks, porches, patios, gardens, rooftops, businesses, restaurants, and more! We can customize them with wheels to roll and also custom make them to virtually any size for any project no matter how big or small.

The many benefits of our Outdoor Rectangular planters are:

  • Outdoor rated, Never Rots - LIFETIME Guarantee
  • Look like wood and can be painted to match your home or left unpainted (comes in white)
  • Self-watering planter option greatly reduces watering
  • Custom sizes and long rectangular lengths up to 16 feet
  • Solid material doesn't crack or warp during winter freezes - plant year round
  • PEAK SEASON: SHIPS FULLY ASSEMBLED in approximately 2-3 business days (not a kit). These are built to order by professional carpenters.

Size options for our Rectangular Planter Boxes:



  • Short: 10"H x 10"W x Any Length

  • Medium: 12"H x 12"W x Any Length

  • Tall and Narrow Planters: 18"H x 12"W x Any Length

  • Commercial Small: 18"H x 18"W x Any Length

  • Commercial Medium: 22"H x 22"W x Any Length, 24"H x 15"W x Any Length

  • Commercial Large Rectangular Planters: 30"H x 18"W x Any Length, 36" squares x 24"Height, 42" Squares x 30" Height

  • Custom Rectangular Planter Sizes: Any size to meet your needs also available!