This molded silicone gasket is a replacement for the false bottom in a BrewBuilt mash tun. If you lost or damaged yours, this custom-fit gasket gets your mash tun back in service. Choose the size that matches your mash tun. Custom made for BrewBuilt mash tuns Solid one-piece molded silicone Lasts for many brews Replaces a lost or broken false bottom gasket Offered in multiple mash tun sizes Brand BrewBuilt Material Silicone (one-piece molded) Fits BrewBuilt mash tun false bottoms Sizes Multiple - select to match your mash tun Frequently Asked Questions Does this include the false bottom screen? No. This is the gasket only. The screen and pickup tube come in the BrewBuilt Mash Tun False Bottom Kits. Which size should I order? Pick the size that matches your BrewBuilt mash tun, for example 10 gal.