19 Building and construction products, namely, wood sheathing and subfloor panels, medium-density fibreboard (MDF) panels, particleboard, non-metal countertops for further installation, edgebanding being wood veneers, PVC, ABS, and acrylic, wood doors, non-metal door panels, plywood, lumber, composite lumber comprised primarily of wood fibre and polymer material, decorative non-metal wall, door, and cabinet panels, melamine and thermal formed laminate (TFL) panels and flooring, high pressure laminate (HPL) panels, flooring, and countertops, laminate panels, flooring and countertops, stone countertops for further installation, stone slabs, non-metal shingles, roofing underlayment, non-metal ceiling tiles, drywall, non-metal stairs, non-metal stair risers, non-metal siding, non-metal architectural mouldings, millwork, exclusive of cabinets, window trims, not of metal, non-metal door trim, window frames, not of metal, non-metal door frames, wood shutters, wood decking, decking comprised primarily of wood fibre and polymer material, wood railings, construction materials being panels of fiberglass, insulation namely insulating glass for construction purposes, insulating glass in passageway doors and windows, structural connectors, non-metal roof vents for heating, cooling, ventilation in residential and commercial buildings, ceiling grid and suspension systems, namely, non-metal suspended ceiling systems comprising panels; nonwoven textile fabrics for use in construction