4 Tiers Shelving Storage RackAssembly Manual The most underused storage space in a home, particularly on an outdoor porch or patio, is vertical area. While theres only so much floor space to work with, going up means that you can keep a great deal neatly stacked and organized without messy bins or boxes. This sturdy shelving rack has all the room you need for lawn and garden items, outdoor entertaining pieces, and even actively growing container gardens, right at your fingertips.