Join your vent pipe to the flange on the back of the toilet quickly and securely with this 4 in rubber coupling. It simplifies through-wall vent hookups and is included in the Incinolet installation kit. For best results, verify your vent run and connect the coupling to the rear vent collar as shown in the manual. Key Features 4 in rubber coupling, joins vent pipe to the rear flange for easier installation. Included in the Incinolet installation kit; also available separately. Supports clean airflow for lower exterior odour when the system is vented correctly. Compatibility Fits standard 4 in vent connections at the rear vent collar; use with the PVC vent pipe specified by Incinolet. What’s Included 1 × Rubber Coupling, 4 in diameter; SKU COU002. Installation & Care (Quick Tips) Measure and dry-fit the vent pipe, then clamp the coupling between the pipe and the rear vent collar. Seal or tape other vent joints as recommended, install a wall flap or rain cap to prevent back-drafts. Inspect clamps periodically and retighten if needed. Specs Diameter: 4 in. Included in kits: Installation Kit, 120V and Installation Kit, 240V. FAQs Is this the same coupling that comes in the installation kit? Yes, the kit includes a rubber coupling along with PVC pipe and a wall vent part; this is the same coupling sold separately. What pipe should I use with this coupling? Incinolet specifies 18 in PVC vent pipe with 4 in interior diameter in the installation kit; match that size for proper fit. Where does it install on the toilet? At the rear vent collar; the manual instructs connecting the coupling and pipe to that collar before routing the vent outdoors.
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