Purlin Hoophouse Upgrade Set Length:20ft (Only guaranteed to fit Bootstrap

(Only guaranteed to fit Bootstrap Farmer Trays

Heat mats are designed to reliably warm the root zone between 10-20˚F above ambient air temperature

Adjustable Fiberglass Wand: Extends from 24″ to 47″ for versatile spraying

It’s UV-stabilized to provide longer holding power

Control airflow from humidity dome with two adjustable vents

Purlin Hoophouse Upgrade Set Length:20ft (Only guaranteed to fit BootstrapAdds a set of purlins to the left and right side of the ridge pole to your hoop house. Recommended for high tunnels and hoop houses at least 20' wide in high wind areas. Required for high tunnels and hoop houses greater than 20' wide. Sold in increments of 20 feet, which cover the left and right runs that go parallel to your ridge pole. Includes Ridge Poles Hoop Cross Connectors Endwall Cross Connectors Bolts & Nuts