37 BUILDING CONSTRUCTION OF PREFABRICATED STRUCTURES, namely, METAL BUILDINGS, GREEN HOUSES, SOLARIUMS, ENCLOSURES FOR POOLS, AND CONSERÂ VATORIES; INSTALLATION, REPAIR AND RESTORATION OF PREFABRICATED STRUCTURES, namely, METAL BUILDINGS, GREEN HOUSES, SOLARIUMS, ENCLOSÂ URES FOR POOLS, CONSERVATORIES, SKYLIGHTS AND REPLACEMENT PARTS AND ACCESSORIES THEREFOR