Oatey SideFlash Vertical Flashings can be used in commercial and residential applications where a watertight seal of piping penetrations through outside walls is required * SideFlash Vertical Flashings are designed with a tear out collar to accommodate pipe size use from ½-Inch to 2-½-Inch or 3-Inch to 6-Inch * Slips easily over vent pipe - self-sealing to vent pipe surface * Self-sealing elastomeric collar attached to a durable flexible hard plastic base * Collar will not crack, chip, peel or separate from base * Absolutely leak-proof & fits most wall constructions * Eliminates caulking - prevents moisture intrusion - no sealing compound required