4 inch vent cover
Description
Update: The Files For This With Updated 2/15 With Some Minor, But Important Tweaks. If You'Ve Downloaded This I'D Recommend Re-Downloading It Now. I Recent Built An Enclosure For Printing Hotter Materials Like Abs. To Prevent Cold Air From Working It'S Way Up The Vent Hose And Slow Hot Air From Leaking Out I Put A Surgical Mask Over The Vent Hole. I Only Had To Experiment One Night Before I Realized The Surgical Mask Was Restricting Too Much Airflow From The Fan. Since My Vent Goes To A Window, But Is Still Behind A Screen, I Needed A Solution To Be Fairly Low Profile. I Designed This Vent Cover To Prevent Back Drafts By Only Swinging One Way. When Venting, The Cover Opens Allowing Unrestricted Air Flow. This Was Designed For A 4 Inch Hole But Could Probably Be Used Up To 4.5. Anything Smaller Obviously Will Work Fine As Well.
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