DUNCHATY 24 Inch Railing Planter Box 4 Pack Metal Window Flower Box Review (2026)

What you get in the pack

This DUNCHATY set includes four 24 inch railing planter boxes, each measuring roughly 24 inches long by 7 inches wide and 7 inches deep, which is enough room for a full row of herbs, lettuce, or trailing annuals per box. Mounting hardware is included in the form of clips, S-hooks, and screws, so the same boxes can go on a railing, a fence, or a wall depending on where you have space. A natural coconut coir liner ships with each box as well, which helps the metal frame hold soil evenly and drain excess water rather than pooling at the bottom. Four boxes is a substantial amount of planting space for one order, which is the main appeal over buying single boxes separately.

Frame and materials

The boxes use a metal frame, which the listing markets as horse trough style, giving it a slightly industrial look compared to plastic window boxes. Metal holds its shape under the weight of wet soil better than thin plastic, and it does not degrade in UV light the way some plastics do over a few summers. The coco coir liner that ships with the set is what actually contains the soil and keeps it from spilling through any gaps in the metal frame, and it is a breathable material that lets excess water escape rather than trapping it against the metal. Because the liner is included, you do not need to buy one separately before planting, which is worth knowing if you are budgeting for this purchase.

Mounting on a railing or fence

The clips, S-hooks, and screws included in the box give a few different ways to attach these planters depending on your setup. Rail clips work for a standard balcony or deck railing, S-hooks suit a fence top or narrower rail, and the screws are there if you would rather mount a box against a solid wall or vertical surface instead of hanging it. That flexibility is useful if you are outfitting more than one spot, since you do not need to buy different hardware for a railing versus a fence. Four boxes at 24 inches each is over 8 feet of combined planter length, so plan the layout across your balcony before mounting all of them in one row.

Weight to keep in mind

Each box is rated for roughly 25 pounds of soil, and across four boxes that adds up to around 100 pounds once everything is watered in, not counting the plants themselves. That is a significant load for any railing to carry, especially an older wood rail or a thin metal one on an apartment balcony, so it is worth checking how the rail is anchored before hanging all four boxes on the same run. Splitting the boxes across two separate rails, or a rail and a fence, spreads that weight out rather than concentrating it in one place. This is really a consideration for any metal railing planter at this size, not a flaw unique to this particular set.

Who this set fits best

This 4 pack makes the most sense for someone with a long balcony or deck rail who wants a uniform look across the whole run rather than mixing and matching planter styles. Because the coco liner and mounting hardware are already included, it is also a reasonable one-stop purchase for a first-time balcony gardener who does not want to source separate parts. Anyone with a shorter rail or a lighter weight limit on their railing may be better served by a 2 pack instead, since four full boxes is more planting capacity and more weight than every balcony can comfortably support.

Frequently asked questions