This is 5 tier wire shelving, you only need to spend 15min to install it. The shelving unit is made of steel wire shelving. It is NSF certified. Maximum weight capacity per shelf is 150lbs when equally distributed on feet levelers. The adjustable leveling feet make wire shelving unit to be placed on uneven ground-a simple twist is all it takes to stabilize. The storage shelves provide an enormous amount of space for you. You can use this metal shelf in the kitchen bedroom garage. This wire