Greentech HVAC 8" x 300' Inch Duct Mask Grill Register Tape gas powered air compressor the load arrestor’s intertie locking easy installation in corrosive the load arrestor’s intertie locking mechanism will engage stopping the load if it breaks free This lifeline system can be combined with additional stanchions and sleeves to offer customizable fall arrest protection as the job changes or grows Greentech register grill mask uses a specialized non residue adhesive that has strong tack while still being a non residue adhesive that easily removes from wall surfaces Greentech Duct Mask Grill Register Tape is designed for HVAC registers to provide an easy and inexpensive way to protect HVAC system integrity by sealing off registers and grills in interior work areas