Tom, Run over to the local commercial roofing company. They can shear you off whatever dimensions you need. A 12-pack might help! Ken / Ken's Antenna Services -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com Search: http://www.contesting.com/km9p/search.htm