Recently, I've been working on an office building and many different materials for it. Most of them were fairly boring (berber carpet, simple floors tiles, etc) But this one was kind of fun and presented a chance to add a lot of options.
You can get the SBSAR on Gumroad here: https://gumroad.com/l/FcSXP
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Check out my other substance packs here: https://dctech.gumroad.com/