These Single Hung or Double Hung Window Sash Coil Spring Balances are stackable.
The letter in the Type corresponds to the tail length.
The number in the Type corresponds to the sash weight in lbs that this component will balance.
So 2 ‘B3’ balances on either side of a window (4 ‘B3’ balances in total), will support a sash weight of 12 lbs (4 x 3lbs).
So 3 ‘C4’ balances on either side of a window (6 ‘C4’ balances in total), will support a sash weight of 24 lbs (6 x 4lbs).
Sold by: Each
Finish/Color: White
Type: B4
