This very popular truth hardware entrygard dual arm casement window operator is made from a precision die cast base with hardened steel gears. The dual arm action of both arms working together, pushes the window out as it draws the corner of the hinged side of the sash away from the jamb. Used by several window manufacturers! Common numbers found on this dual arm casement window operator are 31538, 31539, 30470, 30472, 30841, 30842, 20810, 20544, 40754. Part# 17c037lh, weather resistant finish
Number. 5043158
Brand: AMESBURY TRUTH