THERMA bloc Insulated Masonry Wall System is the easy
economical solution when you require higher thermal resistance
in concrete masonry. Each unit contains an insulating, molded,
one-piece polystyrene liner providing a 0.76 R-value.
The product is available in 20cm, 25cm and 30cm sizes.
However there is no necessity to stick to standard block when
different colors and different block profiles are available on
THERMA block is delivered to the job site ready for
installation and requires no special handling.
Boehmers Therma Block Literature (pdf file)