This 4-tier mini greenhouse comes with durable shelves; the four sturdy shelves are 27 in. wide with 14 in. of height spacing between each, and each shelf can hold up to 24 lbs. providing ample space for trays, pots or planters of small to medium-sized plants. This versatile small greenhouse is suitable for indoor and outdoor use, featuring transparent PVC cover with a roll-up door, which helps you create an ideal growing environment for plants and protect them from pests, frost, rain, dust and other factors. As an ideal small indoor greenhouse, it is easy to move and fix, and like this portable greenhouse, its frame and shelves can be easily assembled without any tools. This indoor or outdoor greenhouse is a perfect way to extend the growing season of various herbs, vegetables and fruit trees, and it can also be used to display beautiful perennials or store gardening supplies. It is made of a tubular steel frame and PVC cover, with dimensions of 27 in. length, 19 in. width and 63 in. height, and each tier has a load-bearing capacity of 24 pounds.