The windows use a 3/8 spiral balance 24in long with blue tips,and a sash weight of 15lbs, The pivot shoe measurements is 2" tall 1-1/4" wide and 9/16" thick, which matches the description of part# 15-121, however i read a post stating that part would not work with the 900 series spiral balance.
My question is, will the 15-118 {which has the same measurements} or the 15-046 {with only a slight different in thickness} work with the 900 series spiral balance? As i would prefer if possible, to have the center notch in the pivot shoe to keep the alignment straight with the balance and window channel.
please confirm the the correct replacement part numbers to match my needs that work in conjunction with each other. Thank You.