Andersen 20410 Removable Interior Grille - Colonial Grille Pattern Handing_Lower Operator arm length is 12-3/8"

Operator arm length is 12-3/8"

This unit takes the place of a screen measuring 33-7/8" wide by 42-27-32" high

Will work with non keeper cut center leg grilles

Andersen TW24410 (Lower Sash) White Exterior and Natural Pine Interior High Performance LowE4 Glass - No Grille Grommets This Sash has no grille grommets

Andersen 20410 Removable Interior Grille - Colonial Grille Pattern Handing_Lower Operator arm length is 12-3/8"Andersen 20410 Removable Interior Wood Grille Works with 400 Series Tilt Wash double hung windows manufactured from 1992 to Present. Use grilles with rounded plungers for windows manufactured from 1992 to May 2010. Use grilles with chisel plungers for windows manufactured from May 2010 to present. Colonial grilles are available with rounded or chisel plungers. Prairie grilles are only available with chisel plungers. Exterior color available in white,