Patent ID: 6298614
Filing Date: 2001-10-09
Classification: E04F,E06B

Abstract:
A window frame for installation in an opening of a structure comprising:a window frame member;a C-tunnel attached to the frame member, the C-tunnel havinga) a first flange having a first face and a second face,b) a second flange, having a third face and a fourth face, the second flange extending outwardly from the first flange in a non-perpendicular direction to the first flange, andc) a third flange, having a fifth face facing the first face and a sixth face, the third flange extending outwardly from the second flange in a non-perpendicular direction to the second flange; anda first channel located on the third face of the second flange and extending diagonally downwardly from proximate the first flange toward the third flange.