{"product_id":"grodan-improved-gro-slab-36x8x3-w-3-4x4-pre-cut-holes","title":"Grodan Gro-Slab Improved – 36\"x8\"x3\" | 3 Pre-Cut 4\"x4\" Holes","description":"\u003ch2\u003eWide-Format Pre-Cut Stonewool Slabs for 4\" Block Integration\u003c\/h2\u003e\u003cp\u003eThe Grodan® Gro-Slab Improved with pre-cut holes is the result of a research partnership between Grodan, Wageningen University \u0026amp; Research, and top commercial growers across North America. At 36\"x8\"x3\" with 3 pre-cut 4\"x4\" holes, this wide-format slab combines a broader footprint with 4\" block compatibility, eliminating manual cutting and reducing labor while maintaining optimal root zone continuity.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e36\" x 8\" x 3\" wide-format slab with 3 pre-cut 4\" x 4\" holes — designed for seamless 4\" block integration\u003c\/li\u003e\n\u003cli\u003eWider 8\" profile supports higher-density planting and improved lateral root development\u003c\/li\u003e\n\u003cli\u003eEliminates manual hole cutting — reduces labor and improves consistency\u003c\/li\u003e\n\u003cli\u003eAdvanced Wetting Agent (AWA) for optimal fiber structure and uniform WC\/EC distribution\u003c\/li\u003e\n\u003cli\u003eImproved hydrophilic technology for enhanced, uniform water distribution across the full slab\u003c\/li\u003e\n\u003cli\u003eOptimized drainage and aeration balance for superior root zone management\u003c\/li\u003e\n\u003cli\u003eMaintains structure, firmness, and rigidity throughout the growing cycle\u003c\/li\u003e\n\u003cli\u003eReusable and recyclable — part of Grodan’s sustainable growing program\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\u003cp\u003eWhite\/Rockwool wrapped slabs with 3 pre-cut 4\"x4\" holes. Intended for commercial greenhouse and indoor farm use.\u003c\/p\u003e","brand":"Grodan","offers":[{"title":"Default Title","offer_id":42225730191444,"sku":"RW327258","price":122.72,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0617\/5365\/5380\/files\/RW327258_1.jpg?v=1752679786","url":"https:\/\/customhydronutrients.com\/products\/grodan-improved-gro-slab-36x8x3-w-3-4x4-pre-cut-holes","provider":"Custom Hydro","version":"1.0","type":"link"}