New, SF-4, Smooth Firestop, 4-Inch, Unique Fire Stop, Horizontal Penetrator, New Construction, SP-4, L5B4 Published July 10, 2020 at 2000 × 1142 in New, SF-4, Smooth Firestop, 4-Inch, Unique Fire Stop, Horizontal Penetrator, New Construction, SP-4, L5B4 OLYMPUS DIGITAL CAMERA ← Previous Next →