Universal Litter Box Carbon Activated Filter Cut-To-Fit 12"x16" Made by Breathe Naturally This Universal Cut-To-Fit Carbon Filter for Litter Boxes is made from Premium BulkFilter Brand Carbon Filter Material Filter material contains high levels of activated carbon to keep area smelling fresh Each filter measures 12x16 and is a Cut-To-Fit filter. Filter can easily be cut with a pair of household scissors Helps keep litter area smelling fresh & Naturally removes stubborn cat litter box odors Universal Replacement for Catit, Natures Miracle, Pureness, PetMate, and Booda products. Made in the USA by Breathe Naturally