Technical Specifications

HOW TO SELECT YOUR SPRING
Determine Wind Direction
Left
Wound
LW
Right
Wound
RW
Measure Inside Diameter
Figure Wire Diameter
Measure Coil Length
2
Note: Not applicable for extension springs.
By Measuring
Dimension of Old Spring
By Height and
Weight of Door21
OPTION OPTION
Be sure spring tension has been released.
See pages 9–11 for spring removal.
Two people or more will be required to
raise the door to allow the placement of a
bathroom scale(s) under the center of the
door. Make sure to bend at the knees when
lifting door and feet are clear of door travel.
For doors weighing more than one scale
registers, two scales may be used
by adding totals together.
Weigh Unsprung Door with a
Common Bathroom Scale(s)
Measure 20 coils
tight together
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Measure coils only,
NOT end cones