What I've been doing for venting 4x4 or 6x6 PVC boxes is to drill a big
hole in the cover with a hole saw, like 2.5" or 4". I take a square
piece of plastic screen repair material that is slightly larger than the
cover, and sandwich it between the cover and box. Voila, a nice large
vent. Of course the box must be installed cover down.
-Steve K8LX
On 10/4/2022 12:50 PM, Jim Brown wrote:
If you study the Cookbook, you will see that these chokes need to be
able to dissipate heat, so, if possible, should NOT be placed in an
enclosure. If they are enclosed, NA6O's excellent lab work has shown
that they MUST be ventilated, and there is a photo of what he did on
verticals at N6RO.
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