Used to fasten greenhouse plastic, bird netting or shade cloth to PVC frames, especially where wind blows coverings off. They easily snap over PVC pipe. Space clamps about 1 ft apart.
Use additional clamps in windier situations or use aluminum rowcover snap clamps to make the PVC snap clamps grip tighter.
Clamp size matches PVC pipe size (for example: 1" clamp fits 1" pipe).
Keep in mind the clamps are heat sensitive and may lose gripping strength if exposed to temperatures greater than 140°F or 60°C.
I've used these on plastic sheeting, netting, agribon fabric, and shade cloth. It works well on all, but can be a little rough on plastic if attached and removed frequently. I also just started sawing them in half with a hack saw and so far they work great and double the bang for your buck.Review by Michael (on 12/7/12)
I use these to hold shade cloth and frost covers over small hoops covering my raised beds. They work very well and are an easy way to fasten covers.Review by Acacia Farms (on 1/21/12)