ISOL®system SRI – Pre-insulated round duct
Double chamber channel with interposed insulation with anti-condensation function and sealing gasket SPIRO® system in EPDM rubber.

Supply is also possible in the following materials:
Aluminum
Stainless steel AISI 304 or 316 
Copper
Painted galvanized sheet RAL

Link and Attachments

SRI – TECHNICAL SHEET (ITA)