Check the listing for details. 4" Diameter Commercial Floor Drain Strainer 6" Tall Perforated New. Condition: New – Open box. Listed at 34.00 USD. The 4" diameter commercial floor drain strainer is a perforated new addition designed for maximum efficiency in restaurant and food service establishments. Standing at 6" tall, this floor drain strainer is perfect for quickly and effectively removing excess water and debris from the floor, ensuring a clean and hygienic environment for customers and employees. With its durable construction and strategic perforations, this strainer is a must-have for any commercial kitchen or food service setting.