Westbrass Decorative High Flow Grid Drain with Overflow Holes. Fits standard sink drains and features an ultra high flow, crowned, grid style lavatory drain which prevents blockage and overflow. Fully finished for exposed installation. Fits 1-1/2 in. opening with 1-1/4 in. tailpiece and 3 in. threading for thick sinks. Brass construction. Rapid draining raised grid strainer lavatory sink drain With overflow Designed by Westbrass, the Westbrass High-Flow Grid Lavatory Drain with Overflow Holes - Exposed in Polished Nickel is built for lasting quality and everyday use. Shop at OJCommerce and explore our collection with free shipping on every order.