Product Details
                        Andersen M640 Sash Balancer with Screws
                    - Works with 200 Series Tilt-Wash Double-Hung windows manufactured from 2000 to Present.
 - This sash balance is a block and tackle balancer located in the edge of sash.
 - There are separate sash balances for the upper and lower sash.
 
Note: For balancer replacement instructions view the "Size Guide & Instructions" section..
Size Guide & Instructions
| 200 Series Tilt-Wash Sash Balancer Installation Instructions | 
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| Install Instructions | 
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