The Master Flow 12 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications.
I have a lot of 12 boxes of ten apiece with covers of 4 inch panduit wire mould, new old stock.if bought at cdw today or locally this would cost $12000.00 .part numbers are ,duct panduit e4x4bl6 and covers c4bl6.$2500 for all or $250 a box of 10 with covers.
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