I have the Jonsbo Aluminum VGA Radiator (Cooler) for the display cards.
https://www.jonsbo.com/en/products/vf1.html
It is just a slot cooler which you can place it below or above your display cards as a cooler.
I bought it from Amazon earlier this year. It is now selling at Amazon for HK $339.00
https://www.amazon.com/Aluminum-VGA-Graphic-Card-Cooler/dp/B07P9Y18HB
I have the full boxset.
Any questions, please do let me know.
Trade at Tsim Sha Tsui MTR or Mong Kok MTR or Olympic Station MTR