6" Block Cover (40 pack) (20/case)
6" Block Cover (40 pack) (20/case) at HorticultureSource.com -
6” Block Cover (40 pack) (20/case) (eco-2244) 6" Rockwool Block Cover, pack of 40 Plastic Block Covers by Hydrofarm Block light from media. Reflect light to plant leaves - where it's needed most . Eliminate algae and mildew growth. 40 dual-sided block covers per pack Plastic Block Covers - Are a precut panda plastic (black one side and white on the other). They will reflect light to plant leaves - where it’s needed the most as well as block light to your media which can reduce and eliminate algae and mildew growth. Each pack contains 40 dual-sided block covers, available in two sizes, 4” square or 6” square. SKU: HGCOV6 ( previously WCECOVER6 ) Weight: 1.0 lbs. Package Dimensions: 7.0L x 6.5W x 0.2H Suggested Retail: $13.95 Manufacturer's Product Information MSRP $ 13.95