The sturdy flange helps the plastic floor sink basket stay in place. The strainer holes are slightly larger than the other strainer baskets. Fits into the bottom of a standard floor sink. Also fits across the opening of a standard bar sink to catch wastewater liquid that flows into sink. Size: 12” x 12” x 4” (30.5cm x 30.5cm x 10.1cm), the basket is 8.5” x 8.5”.