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Features:
Underwriters' Laboratories Inc. Listed
Range of Sizes:
Standard: 652, 653, 654
Back-Check: 683, 684
Two Adjustment Valves: Closing and Latching
speeds controlled by separate regulating valves, adjustable after
installation
Series 680 has adjustable Back-Check function controlled by a separate regulating valve, adjustable after installation.
Universal application. Non-handed for standard, top jamb or parallel arm installation.
Available with regular, hold-open, or fusible link hold-open arms.
Regular arms are equipped with a 15% power adjustment bracket. (+-7.5%)
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Hold-open arms are adjustable for holding from 90
Degree to 180 Degree. Rack and pinion mechanism contained in a high tensile precision cast aluminum housing assures the highest quality.
Stable Hydraulic door check fluid for any climatic operation and constant
lubrication.
Narrow design permits installation on most modern glass and aluminum doors
without adapters.
Finishes available:
AL - Aluminum
DU - Storefront Bronze (Dark)
BZ - Hardware Bronze (Gold) *Special Order - minimum order required
Optional DC-8000 Dress Cover Available
Installation Information
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