3/8 Closed Cell Backer Rod - 2100 ft Roll by TechnologyLK

Great product at a great price.

Works great and is much less expensive than buying it in smaller quantities.

We bought this to do a friends 1940's cabin and it is easy to use and worked great. The Rod quality is consistent over the length and it compresses into the tightest of seams. put this in before you chink. The price is great for the big rolls.

thanks