I was doing research on the a-maze-n pellet smoker and thought to myself "I could make that", and I did, cost me a grand total of $4. The material is a metal gutter guard which cost about $2.35 and some metal picture hanging wire(to twist and secure), about $1.45. Took about 30 mintutes to construct, no welding required, my DIY version in only 1 inch larger then the a-maze-n. Used it today to smoke a chicken on my MES30(master built electric smoker) and it worked like a charm, litteraly thin blue smoke the whole time. Perfect outcome on the chicken also. The trick with the masterbuilt is that you have to remove the chip loader tube completely to allow maximum flow, the Tray needs to come out as well. Give it a shot.