Features 50/50 Bowl Ratio 3-1/2" Standard Drain Opening 33" Minimum Sink Base Cabinet Required Sinks Meet Requirements of The Unified Plumbing Code, (UPC Certified) and (IAPMO Listed) Material Heavy Duty Sound Guard Coated and Padded Scratch Resistant Brushed Finish on Bowls and Rim 18-Gauge 304 Stainless Steel, High Quality (18/10 Chromium/Nickel) Heat Treated Sink - Special Heat Treating Process That Helps Prevent Scratching Included Template for Sink Cut Out Mounting and Installation Brackets 2 Regular Strainers Life-Time Warranty - We Stand Behind the Quality of Our Product Exterior Dimensions: 30" x 18" Interior Dimensions: 28" x 16-1/4" x 9"