• ANSI/BHMA A156.4 Grade 1
• UL Listed and 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, non-handed