Grodan Pargro Quick Drain Stonewool Block 4 by 4 Inch with Hole， Case of 72<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Driest value-priced Rockwool on the market</li><li>14% drier than competitor blocks</li><li>Value priced - no frills saves you money</li><li>Cheap in price by not in strength and uniformity</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51e9mPKDe3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31M-511QpJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51JUtISRI2L.jpg" noproxy>