DUO-FORM (53-2519-90-B3 Recessed Double Sink with 7" Depth Durable acrylic over ABS plastic Easy installation; UL and CSA approved, Made in the USA, 100 percent silicone is recommended for sealing the Duo-Form Plastics kitchen and utility sink lines Drain kit sold separately All installation hardware included Requires a 3.5 inch drain Uses 8 inch center faucet Cut hole 0.5 inch to 5/8 inch smaller than overall length and width of sink