When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay. Grodan Rockwool Delta 6.5 Block / Cube 4"x4"x2.5" With Hole - Strip of 6 This product data sheet is originally written in English. This is for a brand new Grodan Rockwool Delta 6.5 Block / Cube 4"x4"x2.5" With Hole - Strip of 6 Stonewool is recognized the world over as an ideal hydroponics growing medium. Seeds or cuttings are started in these larger Grodan Gro-Blocks and, once rooted, the blocks are transferred to a larger stonewool slab. Gro-Blocks can also be planted directly into containers for soil gardening. This is a strip of six 4"x4"x2.5" Gro-Blocks, each with pre-formed holes. Grodan stonewool is known for its quality, consistency and performance. This is for a brand new Grodan Rockwool Delta 6.5 Block / Cube 4"x4"x2.5" With Hole - Strip of 6 Stonewool is recognized the world over as an ideal hydroponics growing medium. Seeds or cuttings are started in these larger Grodan Gro-Blocks and, once rooted, the blocks are transferred to a larger stonewool slab. Gro-Blocks can also be planted directly into containers for soil gardening. This is a strip of six 4"x4"x2.5" Gro-Blocks, each with pre-formed holes. Grodan stonewool is known for its quality, consistency and performance. Item Height 2.5 in Item Width 4 in MPN Does Not Apply Brand Grodan UPC 856372001448 Number of Items in Set 6 Item Length 4 in Type rockwool