Dorma BTS75V-NHO Non Hold Open Barrier Free Floor Closer (Body & Case Only) - KAL DOOR HARDWARE

Adjustable spring size 14. Can be installed and adjusted to meet 8.5 lb maximum opening force requirements for exterior doors. Compact closer body and cement case 2" deep suited for thin slab concrete construction. Closer body is non-handed. Accommodates doors weighing up to 260 lb and measuring up to 3'-6" wide interior and 3'-0" exterior. Mechanical backcheck at approximately 70. Dual thermostatic control valves combined with special hydraulic fluid provide controlled closing from 175. A secondary regulation system protects closer from damage caused by forced closing. Closer adjustment in cement case provides 3/8" lateral, 1/4" longitudinal, and 5/32" height adjustment. Opening force 5 lb or less on interior doors /8.5 lb or less on exterior doors where door without closer attached is 1 lb opening force or less. Non-hold open unit is U.L. listed for use with fire rated doors when door swing is limited to 175 with an auxiliary stop.