3M - 3M 4HA 4 Inch Diameter Height Adaptor

The 3M™ Fire Barrier Cast-In Device Height Adaptor 4HA is to be used in conjunction with a 4-inch (101.6 mm) 3M™ Fire Barrier Cast-In Device. It increases the height of allowable concrete thicknesses by 4 inches (101.6 mm) for installations requiring up to 12 inches (304.8 mm) pour depths. Features: Designed for use with 3M™ Fire Barrier Cast-In Devices for firestopping through penetrations; Adds up to 4 inches (101.6 mm) to height of device for deeper concrete pours; Easy snap-on assembly saves time and requires no fasteners; For special applications, adaptors can be modified to accommodate deeper concrete pours; When used in conjunction with Fire Barrier Cast-In Devices, Height Adaptors are firestop tested for up to 3-hours in accordance with ASTM E 814 (UL 1479)