Hollow Blocks. Hollow Blocks are produced with hollow centers to reduce weight or improve insulation. The use of block work allows structures to be built in the traditional masonary style with layers or courses of overlapping blocks. These cement hollow blocks are widely used for building infrastructure and require low maintenance. High dimensional accuracy and consistent finish make these blocks an ideal building material for both load bearing constructions as well as partition walls. Our cement hollow blocks are supplied to clients after being tested on various parameters. These concrete hollow blocks are a better substitute to work faster and faster to build a structure long lasting value. Hollow Blocks Size Blocks / Bundle Bundles/Trailer Blocks/Trailer Bundles/Truck Blocks/Truck 400 X 200 X 200 72 21 1512 12 864 400 X 150 X 200 96 21 2016 12 1152 400 X 100 X 200 144 21 3024 12 1728