The AllPoints Foodservice Parts & Supplies 1021205 Guardian™ Drain Lock is designed for efficient drainage management. With a 3-1/2" outer diameter, it fits seamlessly onto 3" diameter floor drains. The dome shape ensures optimal water flow while preventing debris from entering the drain. Constructed with a durable aluminum dome and a sturdy plastic collar, this drain lock offers long-lasting performance and reliability in commercial kitchen environments. Ideal for maintaining cleanliness and functionality in your drainage system.