Am I being too picky? 3 inch flex doubled up...

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Originally Posted by Alice

Animal Plastics currently uses 3" tape on their racks if you request heat tape. They may be switching to 4" because they've seen supply problems with the 3". It would seem that if they use it that it would be sufficient; however, I agree with the comments about the ambient temp in the room playing a role.

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They will provide up to 12 inch if requested.
I have the dual side radiant heat on my CB 70 rack and use 12 inch on each side.