Our 4" Filter Media Cup Silencer is designed to eliminate the sound of trickling water from your sump. Key Features: - Easy removal from cup with large middle opening - Trident shaped media bag hooks that allow you to remove your media bag without sticking your hand into your Filter Media Cup. #Gross - Works with our 4" Filter Media Cup as well as Standard 4" Filter Socks (looser fit on 4" sock). Dimensions: 4in Diameter­ w/ 3/4in hole for a finger Color: Sea Foam White Material: 100% Virgin Delrin BPA free Directions: Wipe silencer with distilled vinegar, then place on top of your Filter Media Cup.

** Our silencer were designed for our brand of Filter Media Cups. They will fit onto other brands and filter socks, but may not be as tight of a fit.