19 Non-metal building materials, namely, prefabricated buildings and structural parts thereof, pre-finished plywood, non-metal veneers, floors and surfaces, skirting, siding, soffits, fascia, moulding, J channels, F channels, finish strips, starter strips and siding related accessories, namely, soffits, fascia and skirting; trim, trim boards, trim sheets, corners, and fasteners, and trim related accessories, namely, mouldings, skirt boards, post wraps, corners, fasteners; mounting blocks, shutters, vents, mouldings, gutters, gutter guards, windows and window related accessories, namely, transoms, geometric shapes, screens; window mantles, doors and door related accessories, namely, sidelights, transoms and screens; mounts, columns, fencing and fencing related accessories, namely, panels, slats, pickets, posts, columns; non-metal railings and railing related accessories, namely, panels, slats, pickets, posts, columns; outdoor structures, namely, arbors, gazebos, pergolas and sun shades; decorative corner posts of vinyl and cellular PVC; outside corner posts of vinyl and cellular PVC; inside corner posts of vinyl and cellular PVC; post wraps of vinyl and cellular PVC; rain removal systems in the nature of gutters and gutter protection; door surround systems in the nature of door casings, mouldings and corner posts; vinyl siding, polypropylene siding, vinyl patio doors