A quick google turns up a handful of suppliers, so some outfits do make them. May not be available for all use cases, though. https://tarmac.com/products/block

A quick google turns up a handful of suppliers, so some outfits do make them. May not be available for all use cases, though. https://tarmac.com/products/blocks/aircrete-blocks/#all?pl1_p=1&p_scr=3234 https://tarmac.com/products/blocks/aircrete-blocks/#all?pl1_...