"We just wanted to tell you how pleased we are with the patio door that was installed and the Gutter Caps that were installed several weeks ago. The patio door looks great and we love the Gutter ... » more
- Harlan and Sandy Henzen of Davenport, Iowa


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Polyisobutylene

Polymer manufactured from gaseous hydrocarbons. The polymer is a major portion of butyl rubber which also contains a small percent of isoprene.

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