Geze TS4000E Electro-Magnetic Overhead Door Closer - Silver Finish and Arm. Inetrnal Doors up to 1400mm or 160kg Max weight. Power size 1-6 . High Efficiency Conforming to BS 8300 Adjustable latch and closing and Backcheck. 120 Minute Fire Rating. 10 Year Guarantee. Heavy duty door closer.