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Block Covers - Pack of 40

Item # HN-HDR538
$22.99
List Price: $22.99
Free Shipping Available on orders over $50
Ships Apr. 21st with FedEx Ground when you buy today
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Brand
Hydrofarm

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  • Block light from media and reflects to plant leaves
  • Eliminate algae and mildew growth
  • Black on one side, white on the other
  • 40 dual-sided 4 in. block covers per pack
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