How many PPFD seedlings do I need?Between 200-400 PPFD: This is great for seedlings, clones, and mother plants. Between 400-600 PPFD: This is great for early to late stage vegging cycles. Between 600-900 PPFD: This is great for the flowering, fruiting, or budding stage of plants. As we know, in order to facilitate transportation and save costs, most of the products on the market have adopted the folding design. But our product is unique, innovative and the world's first pull-out design. original creative extend-retract frame, out of the ordinary. Lightweight structure, less 30% weight and 50% packing volume compared to other competitive products on the market. Saving more about 50% space, saving more about 50% transportation charges,saving more about 50% warehouse charges. The compression of transportation cost wil make it cost-effective Industrial grade, outstanding appearance Surface oxidation treatment. A variety of colors can be customized. Waterproof and corrosion resistance.