fan cover plate
thingiverse
Design Customizable Air Flow Covers for Circular Holes in a DIY Amplifier Box. I Utilize These Covers to Ensure Adequate Air Circulation Inside My Project. The Available Sizes Include: -> A 60mm Wide, 2mm Thick Option Suits 40mm Diameter Holes. -> A 72mm Wide, 2mm Thick Alternative Is Ideal for 50mm Diameter Openings. To Tailor the Design to Your Needs, You Can Modify the Provided Openscad Files.
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