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30in. Slate Grey Supreme Fiberglass Window Box

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Enjoy a classic window box with a contemporary twist in the 30" Slate Grey Supreme Fiberglass Planter. This timeless design has clean lines molded out of extruded fiberglass. The material is extraordinarily durable, yet lightweight. And although it never requires maintenance, fiberglass planters are easy to rinse and clean inside and out as desired. A chic grey finish suggests an urban look and allows bright flowers and greens to pop.

Fiberglass planters are a bona fide outdoor garden container that will not mold, rot, warp or crack. Each order comes with a custom drainage mat, matched to the size of the planter. This creates a built-in system of drainage whereby water is funneled over the convex bottom to escape through end-cap openings. No pebbles or other layering necessary to get healthy airflow and blossoming flower arrangements.

Supreme Window Planters come with (2) wall mount brackets and bolts. Add other hardware as needed per the mounting surface and required reinforcement. Fiberglass planters can be manufactured in custom sizes measuring up to 14'L; please call for details.

30" L x 8 1/2" W x 9" H -Includes (2) Brackets 

Fiberglass Window Box Dark Green Dimensions Hooks and Lattice 

If you'd like a more decorative look to your windows, consider these wrought iron window box brackets below.  Simply locate our different styles on the right side of this page and click to review or add to your shopping cart.Using these shelf-like brackets allows your box to be mounted further from the wall frequently allowing clearance from window trims and other trim boards.
Wroght Iron Window and Flower Box Mounting Hardware
  • French Shelf Bracket Pair- creates a 8 1/4" Shelf

  • Scroll Shelf Bracket Pair - creates a 8 1/4" Shelf

  • French Shelf Bracket- creates a 11 1/4" Shelf
Finish: Powder Coated in Textured Black
Our line of Supreme Fiberglass Window Boxes come with wall brackets to hang your window box beneath a window on your home. Bolts are included, but if you are mounting the box to a stone/brick home, you will need to purchase lag shields separately. Diagrams are shown below so that you can see how the boxes are mounted to a wall and to a railing. To explore additional mounting hardware, including brackets for hanging the box from a railing, visit our Optional Brackets (For Fiberglass Supreme Boxes Only) page.

Fiberglass Window Box Installation from Hooks and Lattice