Quick view ABT, Inc. ABT Polydrain Stainless Steel Locking Device 2840A Compare $17.00 ABT Polydrain Stainless Steel Locking Device for use with Grates: 2444, 2445, 2446, 2447, 2452, 2453, 2454, 2455, 2454.19 & 2455.10. Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List