Hollow bricks are used for building stable structures such as homes, office sites, apartments, etc. Comprised of tough igneous rocks, these clays are resistant to breakage and erosion. These handy appliances for construction are equipped with insulin material (rock wool), making them ideal for developing warm houses in frigid areas. Hollow bricks weigh half as much as concrete variants and can be easily lifted and transported without much effort. Offered blocks have a 6% water absorption rate and can withstand extreme weather conditions. Our products are rectangular in shape and solid red in color. These durable tools can last a lifetime and reusable if needed.