Use this frame when you wish to have your windsock throat open and ready. This frame also sports a double-ball bearing design and is manufactured beginning with a ¼” cold rolled steel. The extension extends into the windsock approximately 28” which holds your windsock open. Have a ¾” female thread or collar looking up for installation. Offered in 18” and 24” diameters one is sure to meet your requirements. These frames also have the black powder coat finish for added durability.