Check the listing for details. SP-13 Superior Smoke Emitters, 500 cu ft, 60 sec. Two tubes, 6 emitters each.. Condition: New. Listed at 24.10 USD. SP-13 Superior Smoke Pellets produce clean, nontoxic, oil-free smoke designed to quickly find air-flow leaks in heat exchangers, air ducts, chimneys, tanks, boilers, and piping. Won't stain clothing or building materials. Contains no explosives. Also used for fire drills and to test smoke alarms and detectors.BuyNow Brands is an Authorized Distributor of Superior Smoke Pellets. We ship direct from our climate-controlled warehouse, insuring receive the freshest product for longest shelf-life and optimal performance. Your satisfaction is guaranteed! FAST SHIPPING! Your SP-13 Smoke Pellets ship SAME DAY if ordered before 1 pm EST. SP-13 Superior Smoke Pellet Specifications: Produces clean, nontoxic, oil-free smoke to quickly find air-flow leaks in heat exchangers, air ducts, chimneys, tanks, boilers, and piping. Won't stain clothing or building interiors. Contains no explosives. Also used for fire drills and to test smoke alarms detectors. Burn time: 60 sec. Volume (Cu.-Ft.): 500 Diameter.: 1.0" Length: 3/4" Package quantity: Two (2) tubes, each containing six (6) smoke pellets. 12 emitters total.