North American Industry Classification System (NAICS) Canada 2012

• 41 - Wholesale trade
• 416 - Building material and supplies merchant wholesalers^CAN
• 4163 - Lumber, millwork, hardware and other building supplies merchant wholesalers^CAN

41631 - General-line building supplies merchant wholesalers^CAN

This industry comprises establishments primarily engaged in wholesaling a broad range of building supplies, such as lumber, hardware, plumbing and electrical supplies, paint, glass and other construction supplies.