FYI, MaxAir 10 speed fans are on sale at Camping World for $239. They are usually $370. https://www.campingworld.com/maxxfan-deluxe-manual-opening-rv-ventilator-system-smoke-lid-48932.html?utm_campaign=email_pricedrop_1_of_2&utm_medium=email&utm_source=wunderkind&utm_term=triggered&ibx_source=c12gqe8mng8n14r3qfhg&ueh=c64d9010faa1a838340cdc023e70763ee9e02afa4a42dc3246c2372775327dac&id=48932&destination=48932&item_type=interaction&recommendation_source=platform2&display_order=0
2021 T@b 320 Boondock "Mattie Ross" | 2021 T@b Nights: 239 | Total nights in a T@b 455 | 2022 Jeep Grand Cherokee L Overland | T@b owner since 2014
Comments
Ours required removing the old unit, cleaning all the old sealant off, sealing and screwing the new frame to the Tab, then finally installing the new unit.
No cutting was required however.
There're a couple of installation videos at that link that might show you the details.
2014 S Maxx
2011 Tacoma 4cyl ... edit: 2022 Tacoma 6cyl - oh yeah!
A_Little_T@b'll_Do_Ya
https://tab-rv.vanillacommunity.com/discussion/8556/fantastic-fan-upgrade-to-7350-dramatic-improvement-in-efficiency/p1