Firth Grey Block 90 x 390 x 140mm SKU: 431434 MODEL: H1504 Sorry, there is currently no online price available for this product.Contact your local store for pricing and availability. Mitre 10 SAvailable at selected stores. Check your local store for details Variants Plain End Half High masonry block 15.04. Features and benefits Hard wearing, durable and dimensionally accurate. Half high double flush ends suitable for columns and wall ends.