Corsica Flower Bridge planters are deigned to fit standard railings upto 2.75 inches wide: balconies, picket fences, chain-link fences, old fashioned rod-iron railings etc. They do Not fit deck railings. Mix them up to add lots of color and flowers to your balcony. The round units are sold in sets of 2. They come with spacers which can be used to hang the Flower Bridge Planters straight - They also prevent the pot from moving around. The overflow outlets at the bottom on each side raise up enough so that the bottom 1.5 space act as a reservoir.Capacity: 1.9 gal Country of Origin: Netherlands Finish: Fuchsia Height: 9-1 2 Length: 11-1 2 Material: Polypropylene Weight: 0.9 Width: 11-1 2