[tab10672]

A perfect match I found when throwing away some of our daughters old school supply's, the fiber board used in the covers of cheap 3 ring binders appear to be the same material and thickness. But if the grill is fragile like in a 20 cathedral I use wood paneling with construction paper glued to the front and back to help hold the weight of the speaker from pushing through.

I cut either with a jig saw and scroll blade, and paddle bits for the larger outer holes.