To expose beam ceiling installations, use roof support. 6" and 8" sizes fit between regular 16" O.C. ceiling joists. It should be use when chimney is installed in standard ceiling. SKU: 41566711 MFG: 8HS-CSA Shop more products by American Metal Products. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. $107.18 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 8" It should be use when chimney is installed in standard ceiling To expose beam ceiling installations, use roof support 6" and 8" sizes fit between regular 16" O.C. ceiling joists Contain stainless steel matte black single wall adaptor 3-wall FEATURES MFR: 8HS-CSA SKU: 41566711 UPC: 095029619708 Brand: American Metal Products