$28.99 (as of August 18, 2018, 3:53 am)
Works with Perma-Shield Narroline Double-Hung Windows manufactured from 1968 to Present.
Sash balancers are metal boxes that contain a nylon cord under tension.
The balancer number is a code for the tension and the cord length.
Works with Perma-Defend Narroline Double-Hung Windows fabricated from 1968 to Present.
Sash balancers are metal boxes that contain a nylon cord underneath tension.
The balancer number is a code for the stress and the cord length.
The right kind balancer will have to be used to take care of the lower and higher sash in an open position.
If you happen to replace one balancer you will have to replace both balancers.
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