Heat radiation on the noggin, was considerable, threw this cheesy foam panel up in about an hour.
Will do future upgrade, with something denser, but here is link to $29 panel anyway.
https://www.amazon.com/gp/product/B0118FMJ72/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
Rushed job, used...