DIY Greenhouse Roll-Up Side Curtain Kit Length:100' ****You must have a master

****You must have a master heat mat to use an add-on

Excellent impact resistance even in sub-freezing weather

The black-coated blades resist dirt adhesion

Made of tightly woven super heavy duty 5oz polypropylene plastic

used to cover seams on polyethylene films

DIY Greenhouse Roll-Up Side Curtain Kit Length:100' ****You must have a masterVent Your Hoop House! With this Roll Up Side Curtain Kit, naturally venting your greenhouse can be done with ease. This kit includes a roll up side set up for each side of your hoop house. Venting your greenhouse not only cools the temperatures but also helps improve your plants' growth with fresh air uptake. Included: 2 Greenhouse Roll up Cranks One for each side of the hoop house Spring Wire & Lock Channel for hip board 3 4" couplings connect each