Botanicare® Grow Mod Trays are durable, customizable grow trays made from heavy-gauge ABS that resist bowing, cracking, and leaking, so you can grow with confidence. 
The sidewalls on these versatile hydroponic grow trays are 4.5 inches high, providing more flexibility and making them ideal for drip, ebb, and flow, or lettuce raft growing. 
Choose between 4- or 5-foot widths, and extend the length from 10-foot 6-inch to 100-foot 6-inch in 5-foot increments, to best suit your greenhouse or other growing space.
 A drain screen with 3 punch outs makes access to plumbing lines easy. 
Sealant yields 16.75 feet of seams (4 ft - 3.7 seams, 5 ft - 3 seams).