Three steel grills: quarter inch bars, half inch frame. Size; 37.5 x 21.5" each, (+ half inch side fitting pieces). Fit together to make various combinations & sizes.
Grills bolt onto side bars. By varying spacing, size can be adjusted, With a space between grills maximum size can equal side bar length; 90 x
Horizontal photo shows a single grill.
Vertical photo; 3 grills stacked together, with no spacing; 38.5 x 63.5"