Product Details
                        Andersen R18/1027 Narroline Sash Balancer
                    - 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.
 - The proper balancer must be used to maintain the lower and upper sash in an open position.
 - If you replace one balancer you should replace both balancers.
 
Note: For instructions on how to replace balancers view the (Size Guide & Instructions) section.
Size Guide & Instructions
| Sash Balance Replacement Instructions | 
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| Install Instructions | 
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