AAC Lightweight Concrete Blocks Autoclaved aerated concrete blocks are also known as partition blocks. Generic selectors Exact matches only Exact matches only Search in title Search in title Search in content Search in content Search in excerpt Post Type Selectors Hidden Hidden 4 Inch AAC BlockRs.49 – 52/ Block 6 Inch AAC BlockRs.73 – 76/ Block 8 Inch AAC BlockRs.97 – 100/ Block