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BUILDING CONSTRUCTION PRODUCTS-NAMELY, MANUFACTURED HOUSING COMPRISING MODULAR AND SECTIONAL HOUSING, AND WOOD AND METAL BUILDINGS FOR USE IN AGRICULTURAL APPLICATIONS FOR GRAIN DRYING, GRAIN STORAGE AND HANDLING, FOR CROP STORAGE, ANIMAL HOUSING, FOR UTILITY PURPOSES, AND AS INDUSTRIAL, UNIVERSITY, AIRPORT AND COMMERCIAL BUILDINGS; LUMBER; SHEATHING; STUDS; POLYETHYLENE SHEETING USED IN THE CONSTRUCTION FIELD AS MOISTURE INSULATING BARRIERS AND COVERINGS; COMPOSITION SHEET COUNTER TOPPING AND END CAPS THEREFOR; MANUFACTURED WOOD PRODUCTS AND MILLWORK, NAMELY, PANELING, PLYWOOD, WINDOW CASINGS AND JAMBS, MOLDINGS, SIDING, VALANCES, COVING, FLOORING; FINISH BOARDS; UTILITY BOARDS; CLOSET LINING, NAMELY, BOARD; INSULATING BUILDING BOARD AND SHEETING; FELT, NAMELY, TAR PAPER FELT FOR ROOFS; TRUSSES; ROLLED ROOFING; SHINGLES; CEILING AND ACOUSTICAL TILE; BUILDING INSULATION; PREFABRICATED CHIMMEYS NOT PART OF A FURNACE; WALL BOARD; HARDBOARD; TILEBOARD; WOOD PARTICLE BOARD UNDERLAYMENT; DOORS, NAMELY, INSIDE AND OUTSIDE WOOD DOORS AND ALUMINUM OUTSIDE DOORS; PREFABRICATED STAIRS; SASH; WOOD AND ALUMINUM WINDOWS; PREFABRICATED THRESHOLDS; PREFABRICATED LOUVERS FOR DOORS AND WINDOWS; TRIM STRIPS; DRYWALL; GYPSUM CONSTRUCTION MATERIALS, NAMELY, PLASTER BOARD AND PLASTER; AND SOFFIT VENTS AND MORTAR MIX