![Can I knock out this newer block and brick work in my fireplace without the whole thing crumbling in on me? : r/DIYUK Can I knock out this newer block and brick work in my fireplace without the whole thing crumbling in on me? : r/DIYUK](https://preview.redd.it/can-i-knock-out-this-newer-block-and-brick-work-in-my-v0-uydcout39y1c1.jpg?width=3024&format=pjpg&auto=webp&s=59919f4cddcf4dc8c23e5700859ad0a457689972)
Can I knock out this newer block and brick work in my fireplace without the whole thing crumbling in on me? : r/DIYUK
![4-in W x 2-in H x 8-in L Concrete Block Concrete Block in the Concrete Blocks department at Lowes.com 4-in W x 2-in H x 8-in L Concrete Block Concrete Block in the Concrete Blocks department at Lowes.com](https://mobileimages.lowes.com/productimages/04549d4e-72b2-4843-8a8c-969268a1f0a2/00509119.jpg)
4-in W x 2-in H x 8-in L Concrete Block Concrete Block in the Concrete Blocks department at Lowes.com
![Build Me STEM Brick Building Blocks for Kids, 25 Piece Foam Block Builders Set for Construction and Stacking - 8” Pretend Play Bricks for Kids Toddlers : Amazon.sg: Toys Build Me STEM Brick Building Blocks for Kids, 25 Piece Foam Block Builders Set for Construction and Stacking - 8” Pretend Play Bricks for Kids Toddlers : Amazon.sg: Toys](https://m.media-amazon.com/images/I/61czjbKkheL._AC_UF894,1000_QL80_.jpg)
Build Me STEM Brick Building Blocks for Kids, 25 Piece Foam Block Builders Set for Construction and Stacking - 8” Pretend Play Bricks for Kids Toddlers : Amazon.sg: Toys
![what are these bricks used for? Got them for free, they told me they were fire bricks but they got a "lip" in the back that makes them hard to stack. : what are these bricks used for? Got them for free, they told me they were fire bricks but they got a "lip" in the back that makes them hard to stack. :](https://preview.redd.it/lh9ikgy6isb91.jpg?width=640&crop=smart&auto=webp&s=1dac4d3339b11a80c04cc9558f04f1755876c372)
what are these bricks used for? Got them for free, they told me they were fire bricks but they got a "lip" in the back that makes them hard to stack. :
![RCP BLOCK & BRICK - 18 Photos & 44 Reviews - 1070 W Mission Ave, Escondido, California - Masonry/Concrete - Phone Number - Yelp RCP BLOCK & BRICK - 18 Photos & 44 Reviews - 1070 W Mission Ave, Escondido, California - Masonry/Concrete - Phone Number - Yelp](https://s3-media0.fl.yelpcdn.com/bphoto/eyrtbqWYgK7b-RWAQnnURw/348s.jpg?webp=true)