Greenhouse Side Manual Roll Up, Self Locking Roll Up Unit, Hand Crank Film Winder Roller for Greenhouse Plastic Film Livestock Curtain Ventilation, Adjustable Handle, Max. 328ft
Hand crank roll-up unit with gear ratio of 4:1 can roll up or down the greenhouse plastic film or livestock curtain for up to 328ft in length (applicable length varies with materials)
Manual roll-up has a built-in self-locking device that helps stop the rolling during opening or closing as you like
Hand crank film winder features built-in premium core components made of chrome alloy steel that provides high strength, corrosion resistance, wear resistance, and heat resistance
Greenhouse roll up features an extra hole for mounting the non-slip handle, allowing use in limited space
Hand crank film roller also features high-quality pulleys that can roll smoothly to save labor, cast aluminum housing with double-layer coating, and upgraded fittings
