Cellenbeton Latei 1250x125x150mm Cellenbeton Blokken 200 mm Quality: G2 350 C2 350 Strength class:G4 Quality: G2 350 C2 350 One of these is that this building material is resistant to moisture or mold No expansion differences: Because the same material is used between the lintel and the wall Dimensions (LxHxW): 2500x125x150mm or 250x12