6 Building and construction materials of metal, namely, wall panels, floor panels, ceiling panels; transportable buildings of metal; non-electric cables and wires of common metal; metal hardware, namely, nuts, bolts, nails, springs, washers; containers of metal for storage and transport; safes; metal tethering chains; hooks and chains of metal for stables and tack rooms; building materials of metal in the nature of wall panels, floor panels, ceiling panels and transportable buildings of metal for agricultural use, especially for keeping, breeding and grooming horses; fixed fences of metal and mobile fence elements of metal for horses; mobile and stationary traps and walkers of metal for horses, consisting of fences, gates and doors; metal and steel structures for stable equipment, namely, stable stalls, stable pen partitions, aisle partitions, aisle and stall grates, gates, posts and doors; stands being structures in the nature of roundpens and paddocks for horses of metal for horses; pasture fence gates and gate latches of metal; windows of metal, window stops of metal, shutters of metal, window frames of metal, window latches of metal, roof lights of metal; doors of metal, door frames of metal, frames of metal for building, door latches of metal, non-electric door closers of metal; horse shelters of metal; horse boxes, stables, riding halls and round arenas, indoor and outdoor horse stalls and pasture huts for horses all of metal