Accordion doors of metal; Animal enclosures in the nature of modular metal stables; Armored doors of metal; Armor-plating of metal; Armoured doors of metal; Automated pet appliances, namely, metal pet doors; Automated security gates of metal; Bannisters of metal; Barbed wire; Cat doors of metal; Cat flaps of metal; Dog doors of metal; Dog flaps of metal; Door frames of metal; Fences made of metal; Fences of metal; Folding doors of metal; Iron gates; Metal gates and fences; Metal pet doors