Coil Spring Cassette (Ferco) (B3) CF

Sold by: Each      Color: White

Type: B3      

Description:
These parts 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).

Constant Force System (CF)