Need a dome strainer? Looking to replace an old or rusty dome strainer, often found in floor sinks? We are the leader in drain strainers and we offer two great options. The Guardian Dome-D-Lock is made with glass filled polypropylene base, cast aluminum dome top, brass nut, and a tamper proof pin-n-head stainless steel bolt. No assembly required and it is easy to install. The Locking Dome Strainer Kit is made from the strongest composite available for impact, heat, and chemical resistance. It is equipped with notches surrounding the bottom to ensure every last drop of water drains out of your floor sinks and receptors.