Masterbuilt® smokers deliver for those ready to master the art of smoking. - YouTube The 40 inch Thermotemp XL smoker makes propane smoking simple and safe. No more monitoring or adjusting temperature. Masterbuilt ThermoTemp Propane Smoker user review. Patent-pending ThermoTemp innovation lets you set the temperature and walk away. The safety shut-off valve provides a safe smoking experience while the 4 smoking racks provide plenty of room to smoke your favorite foods. Need the manual for your Masterbuilt product? We've got you covered. Master the art of smoking with Masterbuilt. The MPS 340G makes propane smoking simple and safe. With a full line of propane, electric and charcoal smokers, you can expect a worthwhile BBQ experience with a Masterbuilt smoker. Master the art of smoking with Master built. No more monitoring or adjusting temperature. The safety shut-off valve provides a safe smoking experience while the four smoking racks provide plenty of room to smoke up to 16 chickens, 6 turkeys, 8 racks of ribs, or 8 pork butts. Patented ThermoTemp innovation lets you set the temperature and walk away. Search by model number to find the manual you need. Genuine Masterbuilt® parts for you Masterbuilt® smoker, grill or fryer.