Pressure-treated lumber, plywood, and other wood products, namely, sawn timbers, shakes in the nature of non-metal shingles and shingles, [ stair heads in the nature of hard wood flooring, ] stair jacks in the nature of planks of wood for building, stair risers in the nature of semi-worked woods for use as building materials, [ railing, ] decking, lattices, [ spindles in the nature of non-metal rails, handrails, ] posts, [ balusters in the nature of non-metal rails, ] semi-worked woods in the nature of joint pins for use as building materials, screen panels in the nature of nonmetal exterior panels for use as construction materials, fence panels, [ gazebos, gates, ] post tops and caps in the nature of semi-worked woods for use as building materials, [ lawn edging, ] stakes in the nature of chemically treated wood [ particularly wood beams for use as stakes and for aquatic uses, ] nonmetal construction materials particularly drilled and grouted pile foundations, posts and non-metal poles for electric power lines, non-metal building materials in the nature of soffit and fascia, floor joists, pilings, [ sill plates in the nature of window casements not of metal, window sashes, headers in the nature of non-metal fireplace mantles, ] sheathing board, trim, girders, pressure-treated wood columns, flooring and subflooring in the nature of flooring underlayments, rails, siding, rafters, studs in the nature of planks of wood for building, ceilings, [ materials for the construction of greenhouses in the nature of non-metal greenhouse frames, ] and wooden landscaping materials particularly walkways in the nature of prefabricated non-metal bridges, patio squares in the nature of manufactured brick veneer made of wood for use on patios and for use as a building material, and fencing; wood impregnated or otherwise treated with chemicals to impart to the treated wood resistance to fire, decay, dry rot, termites, and other wood destroying agencies, namely, preserved wood and fire resisting wood