Sargent 351 Series Powerglide grade 1 surface mounted Compression Holder Heavy Duty Arm x TB door closer with adjustable closing force ranging from size 1-6. User friendly versatile mounting applications permit standard, top jamb, parallel and track installations. The 351 Door Closers is non-sized so that closing force can be adjusted in the field to accommodate various door sizes and weights. Adjustable spring power allows 351 closers a size range of 1 through 6. They are adjusted to size 3 before leaving the factory. 351 series catalog Features Certified ANSI/BHMA A156.4 Grade 1 Conforms to UL10C and UBC for positive pressure fire test UL Listed and cUL Listed to Canadian Safety Standards listed for use on fire doors Ten year **User friendly versatile mounting applications permit standard, top jamb, parallel and track installations Self sticking templates supplied for most applications 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 (except track)