It is a proven way of setting professional standards of durability.
Grade 1 marks door handle.
The ansi grading system has endured for decades.
Mechanical lever cylindrical lockset function entrance lockset grade 1 style 95 angled lockset finish satin chrome marks c keyway standards ansi ul listed ada compliant no lockset fire rating 3 hr.
Features lifetime easy install handicapped access for use with wood steel doors handle material zinc.
Grade 1 locks and deadbolts can be used on homes when you want the best security but they tend to be limited in style and finish options.
Backset 2 3 4 in.
In addition to 3 hr doors up to 4 ft in width and 8 ft in height the lock set may be used on doors rated 1 1 2 hr or less up to 4 ft in width and 9 ft in height.
A deadbolt rated as grade 1 must withstand 250 thousand cycles and 10 door strikes with a hammer.
To earn this grade a door knob must withstand 800 000 cycles six door strikes and a 360 pound weight test.
Grade 1 door knobs units need to withstand 800 000 cycles 6 door strikes and a 360 pound weight test.
80 line grade 1 10 line grade 2.
Zinc brass bronze or stainless steel lever handles or paddles 5pd only.
While offering their clientele tremendous savings on locksets both during bidding as well as during order placement the result is increased business volume for their customers.
Budget becomes important here as well since grade 1 locks are the most expensive.
Marks usa has become a leading proponent of value engineered solutions on a wide array of high end projects.