PivotTrue® Single Constant Force Coil, Double Hung Window Balance - Choose Weight

PivotTrue® Fully Assembled Constant Force Coil Window Balance System, Single Spring Coil

Each coil has a number, letter or both stamped near the beginning of the J-shaped spring/coil.
The number on coil identifies the weight range. Single coils have a size number of 3 -10.

Some pivot lock shoes have a color coded stripe that indicates the weight range
The xinc cam in the pivot lock shoe is designed to use a round head pivot bar, and will work with other shapes.
Pivot bars are available with assorted lengths, shapes and hole patterns to accommodate various manufactures.

Balance Shoe Width: 1-1/4 inch
Balance Shoe Length: 1-7/16 inch
Balance Shoe Thickness: 9/16 inch (1/2Inch Carrier)
Overall Length (Housing & 1 Coil): 2-5/8 inches
Housing Markings: PAT. # 6,983,531 - 5,371,971

Coil Sizes/Numbers (will be stamped as a number, letter or both on the actual metal coil):
3A, supports 4-6 pounds when installed in pairs - may have brown stripe on bottom
4B, supports 7-8 pounds when installed in pairs - may have red stripe on bottom
5C, supports 9-10 pounds when installed in pairs - may have blue stripe on bottom
6D, supports 11-12 pounds when installed in pairs - may have yellow stripe on bottom
7E, supports 13-14 pounds when installed in pairs - may have green stripe on bottom
8F, supports 15-16 pounds when installed in pairs
9J, supports 17-18 pounds when installed in pairs
10K, supports 19-20 pounds when installed in pairs