Faucet Knockout

Faucet Knockout for Concrete Countertops
The Faucet Knockout is a durable, reusable silicone insert designed to create accurate faucet openings in concrete countertops. It forms a standard 1-3/8" hole to fit most faucets, along with a 2-1/2" pocket beneath the surface to allow secure hardware installation.

Engineered for use with 1/2" substrate and standard 2-1/4" countertop forms, this knockout ensures consistent placement and a professional finish. The flexible silicone construction allows for easy installation and removal, making it ideal for both contractors and DIY projects.

To install, simply use a 2-5/8" hole saw and insert the knockout from underneath until it sits flush with the form surface. It helps position faucet openings accurately while maximizing concrete strength around the sink area.