2′ x 3′ size (the roughly 13.5″ x 13.5″ size Midlee Cage Panels). Assembled dimensions are 41″ x 27″. When making your own guinea pig cage, these liners are a must! Makes cleaning up messes extremely easy! All you need to do is clear the debris and bedding. Spray with a pet-safe cleaner – we recommend a half vinegar and half water mixture. Then wipe with a clean cloth! Cage panels are sold separately.