Double Greenhouse Lock Channel Pack Size (Select Below):40 Pieces Optional add-a line for extra

Optional add-a line for extra rows

Yellow markers every 12 inches for easy plant alignment

At BSF our commitment to quality products makes us stand out in the arena of seed starting supplies

so go for one that's soft

Double Greenhouse Lock Channel Pack Size (Select Below):40 Pieces Optional add-a line for extra6. 5 ft Long Aluminum Double Channel for Greenhouse Covering Attachment Attach even more layers with a double lock channel for your hoop house or greenhouse. This USA Manufactured lock channel has enough room for up to 6 layers between the 2 attached channels. That means that not only can you attach your insect netting and plastic you can also add shade cloth and a double layer of plastic to create a microclimate in your hoop house for your crops.