Justrite Disposable Bucket Liner for Smoking Recepticles are special laminated aluminum/poly liners that make cigarette butt disposal cleaner and easier than ever! Once the burn resistant liner is full, simply use included twist-tie to close and discard. No need to "shake out" nasty butts and ash. Fits any bucket 11-3/4" (298mm) wide x 10" (254mm) high maximum size. When used with Justrites Elite or Original styled Smokers Cease-Fire smoking receptacles, the system is FM approved.