Simulated steel fenestration system

A simulated steel fenestration system comprising:

• a frame;
• a pane assembly assembled with the frame, the pane assembly defining an outer pane surface and an inner pane surface;
• an outer muntin bar extending in a first direction and defining a planar first outer bar surface, a planar second outer bar surface, and an inner bar surface, each of the first and second outer bar surfaces defining a distal edge, the inner bar surface extending between the distal edges of the first and second outer bar surfaces and defining a width of the outer muntin bar, the inner bar surface attached directly to the outer pane surface, the outer pane surface spanning the width of the outer muntin bar, wherein the first and second outer bar surfaces are angled towards one another at an acute angle relative to the inner bar surface, wherein the planar first outer bar surface, the planar second outer bar surface, and the inner bar surface fully surround a substantially hollow interior of the outer muntin bar;
• a muntin bar segment extending in a second direction perpendicular to the first direction, the muntin bar segment defining a first outer bar surface, a second outer bar surface, and an inner bar surface, wherein each of the first outer bar surface and the second outer bar surface defines an angled end, the angled ends abutting and matching the angle of the first outer bar surface of the outer muntin bar;
• and
• an inner muntin bar attached to the inner pane surface and laterally aligned with the outer muntin bar, the inner muntin bar formed as a thin planar panel;
• wherein at least one of the frame and the outer muntin bar comprise a non-steel material configured to resemble steel;
• and
• wherein the frame comprises a first bracket and a second bracket, the pane assembly is clamped between the first and second brackets, and the simulated steel fenestration system further comprises a first seal compressed between the first bracket and the outer pane surface.