WHITCO SPIRAL BALANCE STANDARD FOOT

Spiral Balance Selection Guide

Step A - Select Balance Number - If replacing an existing balance, measure the body length and match to Body Length ‘L’ Dimension.
Step B - Top Sash Balances - 1. Measure the overall height of the top sash (including horns, if used). This is the Closed ‘C’ Dimension.
2. Refer to appropriate Closed ‘C’ dimensions on size chart and select the Balance Number matching the Closed ‘ C’ Dimension.
3. If there is not an exact match to Closed ‘C’ Dimension go to the next smaller Balance Number
e.g. – For Closed ‘C’ dimension of 341mm select 318mm
Step C - Bottom Sash Balances
1. Measure the overall window opening height from sill to head. This is the Extended Dimension ‘E’
2. Refer to appropriate Extended Dimensions ‘E’ on size chart and select the Balance Number matching the Extended
‘E’ Dimension.
3. If there is not an exact match to Extended ‘E’ Dimension go to the next larger Balance Number size.
e.g. – For Extended ‘E’ dimension of 546mm select balance number 110.
Step D - Select Weight Range - The next step is to establish the weight of each sash then select the filter for the required weight range.