Duct Fan Speed Adjuster Planting Cloning & Seed Starting Each box has the stakes

Each box has the stakes in bundles of 100 stakes

Plants relish highly absorbable forms of potassium and phosphorus

It is reusable as long as it is thoroughly cleaned between uses

removing the need for a frame inside

Adjust the placement position to your preferred height during installation

Duct Fan Speed Adjuster Planting Cloning & Seed Starting Each box has the stakesHydrofarm's Fan Speed Adjuster was designed especially for centrifugal fans. This means it will help prevent damage to fan motors, ensuring longer life. (Meant for use with brushless motors, and all Hydrofarm inline fans, not booster fans) It will correctly and precisely adjust the speed of centrifugal fans. These controllers are more sensitive than any on the market, and are compact and built to last. Features Internal electronic auto resetting