You have the option of adding fan cutout holes in two places: Front and center (two bays back from the headliner) Rear and center (two bays in from the rear) All the fan cutouts are located to be compatible with a Sprinter Roof Fan Adapter Kit. If you would like to add a cutout for an AC or skylight, please contact us with your dimensions and we can modify the panels for you. Please note that any changes not listed on our website make your order a CUSTOM ORDER and therefore cannot be refunded or replaced if the cutouts do not line up based on the information provided to us. With your order, please contact us to confirm your cutout needs!