SILICONE BOX LINER SBL-1 (2-Pack)THE SILICONE BOX LINER (SBL 1) fits perfectly into our lower grease bucket of THE GREASE BOX (Sold separately). Our custom fitted silicone liner is high heat resistant and reusable, making your wood pellet grill maintenance easy and cleaner! All wood pellet grills have a grease bucket that collects the residue from grilling food. THE GREASE BOX offers a safe and more stable collection of these fluids. Add a silicone box liner to make clean up even