I used a sheet of rolled Aluminum flashing I bought at Lowe's some time back. Make sure it's not the Zinc coated stuff, only the plain Aluminum sheeting. You can use the templates from the Bandera bible and a pair of tin snips and you're in bussiness.
We sleep peaceful in our beds because Rough Men stand ready in the night to visit violence upon those who would do us harm.......G. Orwell
Brinkman Smoke King Deluxe, The Famous StudeDera, Weber Smokey Joe Gold and Platinum, Brinkman Professional Grill, Brinkman ECB and 2 Weber Smoky Mountians