Andersen 431 Narroline Sash Balance Unit Number_AR4 Andersen AW45 Awning Sash with

Andersen AW45 Awning Sash with Low-E4 Glass in Sandtone Color Works with Perma-Shield Casement Windows manufactured from 1966 to Present

This operator fits windows with a visible glass dimension width of 12-5/8"

Andersen Awning Operator - #A2-7184 Scissor Type - Stone Color

This sash has an unobstructed glass size of 27 inches wide by 27 15/16 inches high

Andersen CW4 Casement Sash - High-Performance Low-E4 Glass - White Color

Andersen 431 Narroline Sash Balance Unit Number_AR4 Andersen AW45 Awning Sash withAndersen Perma Shield Narroline sash balancer 431. 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 either the lower sash or the upper sash in an open position. If you replace one balancer you should replace both balancers.