Options by Hive, Wax Heater Cardboard Protective Collars 50 Disposable in a Pack Options by Hive protective cardboard heater collars have been designed to offer maximum protection for your wax heater. The inner edge of the heater collars have been specially pre-cut in order to accommodate all sizes of inner container to fit all leading wax heaters. There are 50 disposable collars in one pack.