UL Listed R7483 Material: Cast Iron housing, high tensile Steel camshaft and pistons Two independent regulated valves for latch and closing speed adjustment Mounting: fits in an aluminum header or transom bar as small as 1 3/4” x 4” Non-hold open closers are UL Listed Closer body spring tension: adjustable 2-5, light #2, medium #3, heavy #5 Center Pivoted only are ADA compliant: barrier free adjustable models 7010,7011 90 or 105 degree swing - non- handed Feature: Hold open For those who prefer the visual advantages of a concealed door closer, this commercial door closer offers an excellent “hidden” solution. Center-pivoted for single and double acting doors. It features multiple spring tensions available to match most door size and weight. Consistent closure speed is assured with its temperature-sensitive hydraulic fluid.