Ducato For an 05 2.8JTD

I need an air filter box, complete except for hoses. I will need pics as I think there is more than one type. It is in a motorhome. I can't get the screws out of tke lid on mine, and it needs to come out so I can change the reverse light switch. I may end up having to cut the top off hence the need for a spare one. Thanks.