A pair and a half (three hinges) can be fitted to provide extra strength for heavier doors. Complies with BS EN 1935-2002 (assessed for use on 30, 60, 90 and 120 minutes timber fire doors and 240 minutes on steel fire doors). Supplied as a pair. Manufactured from grade 201 stainless steel and CE marked (Grade 13). Overall Size: 102mm x 76mm Leaf Width: 30mm Thickness: 3mm