Mannok Aircrete Coursing Bricks are perfect for filling spaces around doors and windows, closing cavities, and adjustments between joists, offering a more efficient construction method than onsite block cutting. They save labour costs and construction time, are made with up to 80% recycled materials, and have an A+ Green Guide rating, highlighting their sustainability. Their lightweight yet strong nature, combined with thermal efficiency, facilitates easy handling and contributes to energy-efficient building structures, with a compressive strength of 5.2 N/mm^2, classified as Type B5.