TALLER PlANT SAUCER With a 3.7 inch depth, these thick durable sturdy plastic plant saucers are the deepest on the market. The tray size of each Flower pot trays is 20.5" at the top and 18.5" from bottom. THICKENED & DURABLE Its heavy-duty PP plastic construction can support even your heaviest planters. The plastic is sturdy, strong, durable will last for several years. Protect Your Household Surfaces Say goodbye to water and soil spillage or damage to your furniture surfaces! Our plant trays are waterproof and designed to catch excess water and soil, keeping your home clean and tidy. INDOOR and OUTDOOR USE They're suitable for both indoor and outdoor plants, so you can use them anywhere.