Oatey 12806 Roof Flashing, 3-Inch-6-Inch, Black Sidewall flashing is designed to seal around piping penetrations through outside walls Designed to seal around piping penetrations through outside walls 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