Karlliu 24-Inch Window Box Planters 4-Pack — Metal Rail/Deck Troughs with Adjustable Brackets & Felt Liners

These Karlliu 24-inch metal window boxes are a ready-to-hang set of four outdoor planters with adjustable brackets and breathable felt liners for year-round flower and herb display.

Give railings, fences, balconies and windows a tidy, long planter that blends function with curb appeal. Each unit combines a powder-coated steel trough for strength, a non-woven felt liner that supports moisture control and root health, and an adjustable bracket system that fits most rail and sill widths. The set of four makes it simple to style a continuous row of blooms or create matching groupings across a porch or patio.

How do these planters hold up outdoors?

The planter baskets are built from carbon steel finished with a rust-resistant powder coat, designed to resist weathering and keep structural integrity season after season. The reinforced hardware reduces soil loss while the metal frame supports heavier potting mixes and mature plants without sagging.

• Powder-coated carbon steel resists corrosion and chipping.
• Reinforced seams and support bars prevent deformation.
• Durable finish suitable for patios, porches, and exposed railings.
• Includes installation instructions for secure mounting.

What planting and drainage features are included?

Each trough includes a breathable non-woven felt liner that holds soil while allowing excess moisture to escape, helping roots breathe and avoiding waterlogging. The liner makes seasonal planting easy because you can fill, swap, or refresh soil without damaging the metal basket.

• Non-woven felt promotes aeration and moderate water retention.
• Liner reduces soil loss through the basket and simplifies repotting.
• Suitable for annuals, perennials, herbs, and trailing plants.
• Holds typical potting mix and slow-release fertilizers safely.

How do the adjustable brackets work on different railings and sills?

The included adjustable brackets offer multiple mounting positions so you can hang the boxes over narrow railings, wider fences, or on window ledges. Brackets lock into place for a stable attachment and can be repositioned without special tools, making installation fast and flexible.

• Four installation options for varied railing and sill thicknesses.
• Tool-free adjustment and tightening for quick setup.
• Bracket design minimizes soil shake and slippage when secured.
• Works with wood, metal, and vinyl railings when properly fastened.

What size and quantity will I receive, and how do I assemble them?

This package contains four 24-inch long trough planters (24" L x 7" W x 5.25" H) ready to mount where you need continuous color or repeated accents. Assembly is straightforward: unfold or attach the brackets per the included manual, set the felt liner inside each trough, add soil and plants, and hang.

• Four matching 24" x 7" x 5.25" metal troughs for uniform display.
• Step-by-step installation guide included inside the package.
• Simple assembly; no specialist tools required for typical setups.
• Recommended for standard railing depths—check bracket fit before planting.

Who is this for: These Karlliu planters suit homeowners, apartment renters, balcony gardeners, and anyone who wants a neat, uniform row of flowers or herbs along railings and windows. They’re also ideal for property managers and landscapers needing weatherproof, easy-to-install troughs that present consistent results across multiple locations.