envelopelearning@mainstreamcorporation.com phone303-912-4833
The G4 Filter is a MERV 7/8 and the F7 Filter is a MERV 13 for pollen seasons.
* THESE ARE COMING BACK IN STOCK AND WILL SHIP AT THE END OF APRIL. *
$365.00
G4 Filter, MERV 8 - winter filter for supply or exhaust and bypass filter used in summer. F7 Filter, MERV 13 - summer pollen filter for supply only
$365.00
One 7.8" 200mm round duct connects to a 12-port silencer manifold box.
$751.00
The Round 3 Port Diffuser Box is typically used in combination with the Diffuser boxes requiring three ducts.
$215.45
The new generation in Zehnder ventilation units. Designed for use in residential and small commercial buildings (~4 bedrooms, 3.5 baths), providing up to 208 cfm.
$5,180.00
Flexible 3-inch diameter air distribution pipe, outside ribbed, inside smooth according to DIN EN 60529.
$421.00
-100x100.jpg "ComfoTube 75 O-Ring (10-pack)")
The ComfoTube 75 O-Ring is used to seal Comfotube sleeve. Sold in quantities of 10.
$25.80
ComfoTags for running exhaust or supply ducts through the framing.
$30.68
Insulated Expanded PolyPropylene (EPP) comes in a 45-degree bend; two can be used together for 90-degrees.
$14.16
EPP ducting allows for easy installation of intake and exhaust ducts. Comes in 39" segments.
$25.96
The Round 2-Port Diffuser Box is used in combination with either the Supply Diffuser or the Return Diffuser.
$157.45
The Round 3-Port Diffuser Box is typically used in combination with the Return Diffuser in kitchens.
$215.45
The Round 2-Port Diffuser Box is used in combination with either the Supply Diffuser or the Return Diffuser.
$157.45
Air throughput box for supply or exhaust air, including mounting brackets for the 3-inch flexible duct and white cover.
$135.66
Air throughput box for supply or exhaust air, including mounting brackets for the 3-inch flexible duct and white cover.
$135.66
Mainstream Corporation is a Colorado based Passive House Design, Consulting firm. Specializing in Passive House Products for your building project.