Hydrofarm Rockwool Block Cover 6" Pack of 40 lighting-&-electrical-components –Compact/Collapsible

–Compact/Collapsible

Less is more with this highly concentrated formula that reduces the volume of nutrients needed to finish a crop

PTFE (Polytetrafluoroethylene): PTFE gaskets

High intensive and high output provide higher crops yield and bringing more advantages than traditional hid light source

typically experienced at the end of seasons

Hydrofarm Rockwool Block Cover 6" Pack of 40 lighting-&-electrical-components –Compact/CollapsibleDescription Product Details: 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 Specifications Barcodes: 10638104945797 (GTIN) 638104945790 (UPC A) Dimensions: 7. 4L x 7. 2W x 7. 5H (CS) 7. 0L x 6. 5W x 0. 2H (EA) Shipping Weight: 0. 33 lbs.