Dorma BTS80 Series Floor Closer

The BTS80 Series of floor-concealed door closers offer adaptability to almost any installation. The closer's compact body permits its use where a larger closer would be prohibitive. Versatility allows installation in thin slab concrete subfloor construction. A wide selection of interchangeable spindles makes the BTS80 suitable for virtually any floor covering or threshold application. Because the BTS80 can control exceptionally heavy single- and double-acting doors, you can incorporate the floor closer into almost any design to meet most materials, size, and weight requirements Features: Closer body is non-handed. Mechanical back check at approximately 70 degrees. Selectable delayed action between 175 and 75 degrees. Extends the closing cycle to allow unobstructed passage. Delayed action is functional when hold open is not engaged. Dual thermostatic control valves combined with special hydraulic fluid provide controlled closing from 175 degrees. Selectable multipoint hold opens between approximately 75 and 175 degrees. Adjustment for start of hold open range or when delayed action releases. Adjustable between 75 and 105 degrees.