Exhaust flange adapater for JICCODA Laser Engraver Enclosure

The JICCODA laser engraver enclosure  https://www.amazon.com/dp/B0BM3W9VRH?psc=1&ref=ppx_yo2ov_dt_b_product_details...doesn't have a standard duct for hooking up to 4" lines if you were (you should) using a 200CFM blower/piping. This slides on the provided piece to accommodate the 4" pieces.