Holdrite 4"-6" Aerator Adapter for #6 Firestop Sleeve & #7 Hollow Sleeve

Features: Provides a recess in the underside of the concrete floor, for fitting access Available for use with 2”, 3”, 4” & 6” HOLDRITE HydroFlame Pro Series Sleeve For use in concrete floors as thin as 5-1/2” Ideal for Sovent and other high and tight fitting joint access