Photo 1 of *** FACTORY SEAL***Aluminum Large Dog Door for Exterior Doors, Cutout Size 12.2''W x 18''H, Heavy Duty for Extreme Weather, Energy-Saving, Easy to Assemble, Dog Door for Dogs Up to 100 lbs, Lockable Sliver (L)

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Photo 1 of *** FACTORY SEAL***Aluminum Large Dog Door for Exterior Doors, Cutout Size 12.2''W x 18''H, Heavy Duty for Extreme Weather, Energy-Saving, Easy to Assemble, Dog Door for Dogs Up to 100 lbs, Lockable Sliver (L)Photo 2 of *** FACTORY SEAL***Aluminum Large Dog Door for Exterior Doors, Cutout Size 12.2''W x 18''H, Heavy Duty for Extreme Weather, Energy-Saving, Easy to Assemble, Dog Door for Dogs Up to 100 lbs, Lockable Sliver (L)Photo 3 of *** FACTORY SEAL***Aluminum Large Dog Door for Exterior Doors, Cutout Size 12.2''W x 18''H, Heavy Duty for Extreme Weather, Energy-Saving, Easy to Assemble, Dog Door for Dogs Up to 100 lbs, Lockable Sliver (L)