Reducer Centric Connected To Spiral Duct From Both Sides
RECT – Thermal Double Wall Reducer
RECA – Acoustical Double Wall Reducer
Reducer Eccentric Connected To Spiral Duct From Both Sides
REFT – Thermal Double Wall Reducer
REFA – Acoustical Double Wall Reducer
Inner Shell Dia mm d1
Outer Shell Diameter mm d10 = d1+2l
Insulation 25mm Or 50mm
Insulation Density 24 Kg/m3 As Standard
L – 100mm Minimum
Z = (d1 – d2) /2

