Brick->Isolation->25′ GT-ECOT25L 25′ Eco Therm Brick Dimensions (cm): 19.7×23.5×40.0 Weight (kg/piece): 12.00 Wall thicknes 25cm:Pieces/m2: 12 1m2 Weight/m2: 144 1m3 Weight/m3: 600 Thermal Conductivityi (λ) : 0.190