Doskocil Litter Pan - Large (18 1/2" long x 15 1/4" wide x 5 1/4" high) Doskocil has developed one of the most complete lines of litter pans and accessory products available. All are injection molded using only virgin-grade polypropylene. This produces a product which is tough and highly resistant to cracking and corrosion from chemicals in cleaning compounds and urine.