WHMIS boxes are required when you have hazardous materials in the building to supply information to firefighters. These boxes are weather resistant, include highly visible reflective lettering and graphics, include key tags, mounting screws/wall anchors and either (2) padlocks or (2) keys depending on locking system required. NOTE: Boxes being installed in the City of Toronto require Padlocks (AA38PLL) and boxes being installed in the Region of Peel requires Keys for Peel Region (AA38L). Check with your local Fire Department for locking system requirements. 17"H x 17"W x 8"D