After a couple weeks of getting my used Klose 20×48 smoker ready. I finally had an opportunity of firing her up. Was little nervous. It's much bigger than my old Brinkmann. Fired her up last Sunday. And just decided to do 2 slabs of ribs. Starting the fire was just like my old smoker. Put charcoal in. Let it get white. And decided to go Oak and Black Cherry. It was about 25 degrees outside when I started in the morning. Noticed immediately the Klose takes much longer to heat up than the Brinkmann. Took about 20 mins from when the fire was bbq ready. Placed the 2 ribs down and let the fun began. Had to put in more wood about every hour. In my old smoker when the fire started dying. The temp would drop dramatically and very quickly. With the Klose the thick metal retains way better heat. From my smoking point of around 220 to 260 ish. It would drop down to maybe 200 when more wood was needed. The only issue I had was the amount of charcoal to start off with. And adjusting the air flow. Should have put more charcoal to start with. Because the logs did not catch quick enough. Also I will open the air vents more next time. All in all. A very successful first run. Ribs came out great too! Nice looking bark and good deep smoke ring.