Stay comfortable in any working environment with Bullard Climate Control Tubes, designed for use with Bullard supplied-air respirators. Choose the AC1000 for dependable cooling, the HC2400 for both heating and cooling, or the DC5040 Dual Cool to cool both your respirator and a compatible Bullard Cooling Vest at the same time. These rugged, belt-mounted climate control tubes improve operator comfort, reduce heat stress, and help increase productivity during abrasive blasting, painting, coating, and industrial applications. Compatible with Bullard GenVX, 88VX, CC20, RT, and GR50 supplied-air respirators. Note: The DC5040 Dual Cool requires a Bullard Dual Cool Cooling Vest (sold separately) to provide body cooling.