I have worked with similar type blocks in the industry but with the introduction of the Innovent Block my customers have gotten 100% satisfaction with the quality. The prior block available was very fragile and crumbled during installation. Mark’s block is far more sturdy and compressed aggregate. Its sleek design is 10 times stronger and offers ventilation from both sides. Also we like that it comes in 4” and 6” options that works perfectly with other concrete blocks.
— Krishna Ramlaghan - Ramlaghan’s Hardware - Couva, Trinidad, W.I.