Private Reserve Spring Clamp Jars, 18 oz, pack of 6 food-&-water-storage It has two 4" ports

It has two 4" ports to facilitate installment to ventilation systems

Sodium lauryl sulfate also acts as a surfactant which improves the coverage of the active ingredients

The 11 lbs cube expands quickly to over 2 ½ cu ft of a rich growing medium

Ceramic HPS enhances essential oil production and produces plants with minimal stretching

May be added to solution or applied through foliar feeding

Private Reserve Spring Clamp Jars, 18 oz, pack of 6 food-&-water-storage It has two 4" portsPrivate Reserve Spring Clamp Jars are clear glass jars with a rounded square design and silicone gaskets. All materials are safe for dry food and herb storage (but not long term home canningplease do not use these for canning). Ideal for display jars, cookie jars, or for items that will be accessed often such as coffee beans, dried herbs, and candies. The jars are equipped with clear gaskets, but also include colored spare gaskets (purple, orange,