The Dorma BTS80F Floor Spring Door Closer EN4 is supplied with cement box but without spindle. Order required spindle separately. It is supplied as right handed, left handed or universal handed and can be used on standard or fire check single action doors. This floor spring door closer features adjustable closing speed and latching action by valve,and mechanical backcheck. It can be used for fire and smoke check doors and is tested and quality assured, and approved by the Institute for Building Technology, Berlin. For CERTIFIRE approvals see certificate no. 127 (BTS 80 F, EMB).