Photo 1 of Amyhill Dog House Door Flap and Self Heating Pet Pad, Plastic Vinyl Dog Door Replacement Flaps 24 x 18 Inch Large Winter Thermal Pet Mat for Outdoor Indoor Peaked Roof Dog House(13.4 x 20.5 Inch)

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Photo 1 of Amyhill Dog House Door Flap and Self Heating Pet Pad, Plastic Vinyl Dog Door Replacement Flaps 24 x 18 Inch Large Winter Thermal Pet Mat for Outdoor Indoor Peaked Roof Dog House(13.4 x 20.5 Inch)Photo 2 of Amyhill Dog House Door Flap and Self Heating Pet Pad, Plastic Vinyl Dog Door Replacement Flaps 24 x 18 Inch Large Winter Thermal Pet Mat for Outdoor Indoor Peaked Roof Dog House(13.4 x 20.5 Inch)