Staywell The World's Largest Selling Pet Door. 

• Control your pet with a Staywell Cat Flap designed for Bigger Cats up to 22lbs(10kg).
• The 280 Cat Flap for bigger cats, is in a white finish with a rigid flap.
• Manual 4 way security lock: In Only - Out Only - Opened - Locked.
• Universal fitting for doors & windows.
• Important: It is not possible to cut holes in toughened glass of double glazed units except at the time of manufacture. Please contact a reputable glazier.
• Staywell 3 Year Guarantee.
• Overall Size: (292mm x 292mm )(11½" x 11½")
  
• Cut-Out Size: (263mm) (10¼") Diameter.
  
• Shoulder Width: (180mm )(7")