Great for bottom-watering, these are the trays that come with our Seedling Light Carts.
They are heavy-duty, extremely durable, leak-proof, and stackable. Made of thick-walled polystyrene, these rigid trays are able to support a great deal of weight and will last for years. May be hot or cold sterilized. Use them to support other trays or biodegradable pots, or to bottom water soil blocks. Compatibility: Use with Pro-Trays, Jumbo Plug Flats, Mini Square Plastic Pots, Seedling Trays, Shallow Leakproof Trays (white), and all Mesh Trays. Each tray measures 22" x 11" x 2½" and will cradle most standard 1020 flats and trays. Tan.