4 Cell Plug Tray Inserts

USA Made 4-Cell Seed Starting Trays

Proudly made in the USA, 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. 
• Proudly made in the USA, our Seed trays are guaranteed to last at least two years.
• Eight inserts fit per 1020 tray, 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"
• Each cell takes one cup of soil to fill. A 4-cell tray takes a quart of soil.