Cal-Royal 8830 Concealed Overhead Closer 1/2" Spindle 105* NHO

Cal-Royal 8830 Concealed Overhead Closer 1/2" Spindle 105* NHO. Power Adjustable size 1-4. 1/2” Spindle, 105° Non-Hold Open max door weight 220 lb 1/2" spindle 105 degree non-hold open  Power Adjustable 1-4 ( Grade 1 ) Meets both 5 and 8.5 lbs opening force for ADA Replacement for International, Calibre, and CR Laurence ANSI A156.4 Grade 1: UL Listed Closing and Latching speeds controlled by separate regulating valves, fully adjustable after installation. Universal application. Non-handed for left or right door application. An adjustable dual-purpose radial ball-bearing bottom pivot set is provided for floor or threshold mounted ( Side or End Loading ) center pivoted installation. Bottom pivot sets are optional and must be ordered separately. Installs in an aluminum storefront header or transom as small as 1-3/4” x 4”. Positive centering for alignment and to hold door closed against the normal wind or draft conditions. Arm package complete units come standard with top arm assembly “S”