Andersen M550 Balancer for 200 Series Tilt-Wash Product Type_Locks This sash has a visible

This sash has a visible glass measurement of 15-3/4" wide by 23-13/16" high

This astragal is for 6' 8" high patio doors and measures 77" high

This window sash has Dual-Pane Finelight Glass

Note: This is a 1977 and later sash

This sash has an unobstructed glass size of 21-1/2" wide by 28-11/16" High

Andersen M550 Balancer for 200 Series Tilt-Wash Product Type_Locks This sash has a visibleAndersen M550 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..