Product Details:

2 fans: 16″
6 fans – 12″
4 fans – 8″
2 Cutout 9 1/4″
3 Cutout 5 1/4″
2 Fans:16″ w/pop up cutouts 9 1/2 W x 8 1/8″h
6 fans:12″ With 3 pop up cutouts 5 1/4″w x 4 1/4″h