I do not know if this will help - but I can tell you my solution;
I used leftover shelving to make my brooder a mix of -
https://www.amazon.co.uk/LANGRIA-Bo...8GWBZ6STK6D&psc=1&refRID=PS8VAC3VF8GWBZ6STK6D
and -
https://www.amazon.co.uk/LANGRIA-Wa...21C01M0M5Q2&psc=1&refRID=0QWDP3J4P21C01M0M5Q2
You can buy them cheaper than this - so just an example. I put a tarp on the floor for easy cleaning. What I like is that I can fix them into different sizes and shapes as I like. Separate them into sections if a chick is being bullied (but still able to see the others). Or if I have chicks of different ages). Most importantly I can easily disassemble it when not in use.
Will take a picture if you want - just left phone at my mom's tonight tho