These larger 4-cell plug inserts are deeper for growing varieties of crops that need a little more room. Eight of these removable inserts fit in a Bootstrap Farmer 1020 tray. Made out of food-safe, heavy-duty polypropylene plastic and built to last many seasons. Color code your seedlings in these insert plug trays. Available in black, blue, green, purple, pink, orange, and multi-color packs. FEATURES Made from FDA Prime Grade Extra Strength Polypropylene (#5 BPA free) plastic Extra Large 3/4" Drainage Hole makes for an effortless seedling removal. These 4 Cell Inserts are designed with Air Prune technology. Air channels are added on each side to prevent root circling. Air-pruned roots are shown to provide healthier and more vigorous growth. Bootstrap Farmer Seed trays are guaranteed to last at least two years. Eight inserts fit per 1020, and 4 inserts fit in a 1010 Perfect for up-potting peppers and tomatoes. Not compatible with 1020 and 1010 humidity domes as fit is snug. DIMENSIONS Seed tray insert 5 1/4" x 5 1/4" x 4" tall Each cell in the tray insert is 2 3/8" on top, which tapers down to 1 1/4" at the bottom. Air pruning slits measure - 2 1/2" long - slit width is 1/8"
