RSF Opel Wood Burning Fireplace - Firebox Bricks (Individual Bricks)
RSF Complete Kit Part Number: FR-99.11.01.P Replaces 99.11.01.P
RSF Energy Replacement part for the following models only
HAIRLINE CRACKS: Hairline cracks and/or crazing is expected in refractory brick, if your existing bricks have them, they are okay to use. If your new bricks come with them it is okay to use.
There is no warranty for a hairline crack nor crazing
If the brick is broken into two separate pieces, yes the brick must be replaced.