PH9: Parallel holder arm 
 
The 351 Powerglide® line of surface door closers has been engineered to meet the demands of architects and building owners. The 351 Series is a complete line of closers for interior and exterior doors with quality and flexibility to meet virtually every application.
 
Features
ANSI/BHMA A156.4 Grade 1
Conforms to UL10C and UBC for positive pressure fire test
UL Listedand cUL Listed to Canadian Safety Standards listed for use on fire doors                   
10-year warranty
Versatile mounting applications permit standard, top jamb, parallel and track installations
Adjustable spring power allows 351 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory
One door closer body for all applications. All 351 are non-handed.
Meets ADA requirements in all applications except Push Side Track application
High impact non-corrosive plastic covers standard, metal optional. Both secured with two machine screws
All weather capabilities
Captivated brass valves
Interchangeable forged steel arms
Standard and parallel arms
Push and pull track arms (including double egress)
Heavy duty forged steel arms are finely finished and interchangeable between SARGENT 351, 1431 and 281 Series Innovation
Standard pressure relief valves for both opening and closing cycles protect the door & frame from damage caused by abuse