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Concrete/Masonry Walls - Kitchen Exhaust / Air Duct
  Penetrating Item
(Size and Type) 		Sleeve
O - Opt
R - Req'd 		Point Contact Assembly Thickness F Rating Nelson Product UL System FS Detail
  Max. 24" x 48", 20 GA Air Duct & Grease Duct Blanket Types Thermal Ceramics, ETS Schaefer and Vesuvius         4 1/2   2   FSP   C-AJ-7018; C-AJ-7024; C-AJ-7025  FS0211r7
     
 
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