Namsan 4 Way Cat Puppy Doggie Lockable Door For Window/Door Small 5.9 X 6.2 (inches) Opening, Metarial: ABS Silent, does not produce any noise when the pet access 4 Multi function settings: fully closed / fully open / only in / only out suitable for the doors can up to 2-inch thick Namsan's Delivery: FBA(Fulfill by Amazon) can one day delivered, FBM(Fulfill by Merchant) will need 6--14 days, Not as Amazon system shows:14--28 working days