Real Traps is a legit business, however, they use Owens Corning 703 for most of their traps. You can build your own a lot cheaper, that is what I did. Ethan, the owner of Realtraps, likes to promote DIY on other forums. I payed about $120 US for 12 sheets of 2' x 4' x 2" thick of 703 rigid fiberglass.

Pictures on my website.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85