Andersen M640 Balancer for 200 Series Tilt-Wash Unit Number_AP352 From outside of your home

From outside of your home and looking at the window the hinge will be located on the (upper) left side

Andersen double hung full screen 21072

Andersen M760 Sash Balancer with Screws

Andersen 38210 Double-Hung Full Screen

Andersen M640 Balancer for 200 Series Tilt-Wash Unit Number_AP352 From outside of your homeAndersen 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..