Size: S Overall Size (W x H x D): approx. 19.2cm(7.56") x 20cm(7.87") x 2cm(0.71") Flap Size (W x H): approx. 15cm(5.91”) x 15.5cm(6.1") Weight: 200g Size: M Overall Size (W x H x D): approx. 19.2cm(7.56") x 20cm(7.87") x 5.5cm(2.17") Flap Size (W x H): 15.5cm(5.91") x 15.7cm(6.1") Suitable for: Pets who’s weight under 7kg and waistline under 40cm Weight: 272g Size:L Overall Size (W x H x D): 23.5cm (9.25")x 25.2cm(9.84”) x 5.5 cm (2.17") Flap Size (W x H): 18cm (7.09") x 19cm(7.48") Suitable for: Pets who’s weight under 8kg and waistline under 60cm Weight: 378g Specifics: Size:One Size Color: White,Coffee Type:Locking Flap Door Sub-Type:Pet Door Material:Plastic Feature:Top Quality Package Content: 1 x 4 Way lockable pet cat small dog flap door .