This structure had many different sized large openings that required extra support. Because of the large size they needed to be field mulled.
A heavy duty, three quarter aluminum mulling system.
Vertical and horizontal nail fin so that they could apply the window into the to give it more rigidity.
We screwed through the sides of the frames to give it more strength with a plastic button- adding strength to the whole unit to hold it together. We put a J filler around the whole perimeter to give it a nice, a nice clean look.
Because of the size of the pictures we couldn’t one ship them all put together. So they had to be field mulled. They needed the special rigid mounting clips so that they would keep the flex out of the window. We did a three-quarter heavy duty mull versus a standard half inch mull to add support.