Simulated steel fenestration system

An insulated fenestration system comprising:

• a frame comprising a frame body, a first bracket, and a second bracket, the frame body comprising a first frame body and a second frame body, the first bracket defining a sealing slot and an engagement mechanism, the engagement mechanism coupling the first bracket to the first frame body;
• a pane assembly assembled with the frame and clamped between the first bracket and the second bracket, the pane assembly comprising a first pane and a second pane, an outer surface of the first bracket defines a sloped front surface extending away from the first pane;
• a bracket gap defined between the first bracket and the first pane;
• a first seal engaging the sealing slot, the first seal extending across the bracket gap and abutting the first pane;
• an insulating bar extending between the first frame body and the second frame body, an unobstructed elongated channel extending through and encompassed by the insulating bar;
• and
• a muntin bar attached to the first pane, the muntin bar defining an angled end, the angled end abutting and matching an angle of the sloped front surface, the first bracket extends around a perimeter of the first pane so as to include a top bracket extending along a top end of the first pane, a bottom bracket extending along a bottom end of the first pane, a left bracket extending along a left side of the first frame, and a right bracket extending along a right side of the first frame, and the muntin bar one of:
• extends between and to the top bracket and the bottom bracket and is spaced apart from the left bracket and the right bracket;
• or
• extends between and to the left bracket and the right bracket and is spaced apart from the top bracket and the bottom bracket;
• wherein the second bracket is substantially planar and comprises an interior wall and an exterior wall opposite the interior wall, the second bracket oriented substantially parallel to the pane assembly, the second bracket formed monolithically with the second frame body and extending along an outer pane surface of the second pane, the interior wall facing the outer pane surface;
• and
• wherein the second frame body defines a perpendicular frame portion oriented substantially perpendicular to the substantially planar second bracket, the perpendicular frame portion extending in a direction outward and away from the interior wall of the second bracket and the outer pane surface of the second pane, the perpendicular frame portion extending from the second bracket adjacent to a side edge of the pane assembly.