Firth Grey Block 190 x 290 x 190mm SKU: 431438 MODEL: 2019 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 Three quarter masonry block 20.19. Features and benefits Hard wearing, durable and dimensionally accurate. Three quarter block to assist where 190mm block modules do not fit.