snap on back cover with 'grilles' over speakers

[electron]

I'm looking for a snap on cover that covers as much of the back of the iPad 2 as possible, leaving holes for the usual stuff but also 'grilles' over the speakers instead of a gaping hole. I found the switcheasy smart buddy almost perfect except it has a big gaping hole for the smart cover is supposed to go. I don't use the smart cover. Any ideas?