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In addition to fiberglass duct board there are other materials that are used in the construction of a duct system. These materials although some of them may be new to you have been used in the HVAC industry for a number of years. The best material for utilizing joist spaces to use as a duct is Thermo Pan. This is a very lightweight material which resembles a cardboard with an aluminum coating. Thermo Pan is the perfect material to use for joist spaces.
THERMO-PAN® - is a high-quality, sheet metal alternative for constructing return air ducts between joists and stud cavities. Consists of corrugated insulation faced with aluminum. Available in various widths, packed 25 to the box. Significantly reduces duct noises and labor. Requires no shop fabrication. Lightweight pre-cut THERMO-PAN® comes in many sizes. Staples easily and quickly to floor joists and stud cavities, saving on labor costs and adding higher quality to the job.
Lightweight pre-cut THERMO-PAN® comes in many sizes. Staples easily and quickly to floor joists and stud cavities saving on labor costs and adding higher quality to the job.
Headers are precision Die Cut and Scored for easy installation THERMO-PAN® is ideal for I-JOIST CONSTRUCTION which is extremely difficult with sheet metal or other materials.
THERM PAN®
THE RESIDENTIAL PANNING STANDARD FOR NORTH AMERICA!
PATENTED USA AND CANADA
No shop fabrication; user friendly - no cut hands.
No 'oilcanning' or duct noises to generate contractor callback.
Air space in the corrugated medium provides positive R-value.
Stapling as directed results in a plenum air seal tighter than sheet metal.
Enviro-friendly; made from recycled products. Moisture treated against dampness.
All popular joist sizes; preformed headers (for both regular joists and I-joists) also available.
Will not sustain combustion (ASTM E84-91a: Flame Spread 35/ Smoke Developed Index 25).
RESTRICTIONS: No code restrictions for any residential installation unless a fire-rated assembly is specifically stipulated. THERMO-PAN® may be applied to both stud cavity and joist space plenums. The 2000 International Mechanical Code Commentary - Section 602.3 (p. 189) states, "Note that the code does not mention the type of materials allowed for panning the bottom of open joists to create joist space plenums. Traditionally, sheet metal has been used, however composite materials are also used. The code official must determine what materials are acceptable for joist panning."
PATENTED USA and CANADA
THERMO-PAN® is a high-quality, sheet metal alternative for constructing return air ducts between joists and stud cavities. Consists of corrugated insulation faced with aluminum. Available in various widths. However the width sold by DESCO is ready for stud cavities for 16" centers and prenotched for this application. Significantly reduces duct noises and labor. Requires no shop fabrication. Thermo-Connectors are molded plastic strips available in all sizes which easily connect THERMO-PAN® panels.
RESTRICTIONS: No code restrictions for any residential installation unless a fire-rated assembly is specifically stipulated. THERMO-PAN® may be applied to both stud cavity and joist space plenums. The 2000 International Mechanical Code Commentary - Section 602.3 (p. 189) states, "Note that the code does not mention the type of materials allowed for panning the bottom of open joists to create joist space plenums. Traditionally, sheet metal has been used, however composite materials are also used. The code official must determine what materials are acceptable for joist panning."
THERMO-CONNECTORST are molded polypropylene strips which easily connect THERMO-PAN® panels.
Other Types of Duct Fasteners and Hangers are illustrated below
