Cat Mate / Dog Mate Replacement Flaps, Dog Door, Cat Door For 210, 215 - Cat Mate / Dog Mate Replacement Flaps for 210, 215, 216, 221, 234, 235, 304 & 309. It's usually necessary to remove the pet door frame from the door or wall before attempting to replace the flap. The reason for this is that the frame must deform a little to allow the flap ears to get into their proper holes. It can't easily deform when it's fastened down. It's often a good idea to get a spare so you're not stuck if you have a breakage. Availability is sometimes unreliable as the US distributor relies upon container deliveries which can be delayed.
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