Smoke Detector Disposal Box, 18 in Length, 18 in Width, 12 in Depth, Includes 4 Mil Liner, Instructions Manual, Liner Tie, Proof of Purchase, Returnpak Box with Attached Prepaid Return Shipping Label and Un2911 Dot Label, Smoke Detector, Terms and Conditions, For Use With (54) Intact Exempt Radioactive Smoke Detectors Containing a Radionuclide with an Activity Level Equal to or Less Than 1 Microcurie of Americium 241(AM-241)