envelopelearning@mainstreamcorporation.com phone303-912-4833
Registers & Diffusers
Round Ceiling Register with cover, 3-port Supply
The Round 3 Port Diffuser Box is typically used in combination with the Diffuser boxes requiring three ducts.
$181.00
Round Ceiling Register with cover, 2-port Exhaust
The Round 2-Port Diffuser Box is used in combination with either the Supply Diffuser or the Return Diffuser.
$133.00
Round Ceiling Register with cover, 3-port Exhaust
The Round 3-Port Diffuser Box is typically used in combination with the Return Diffuser in kitchens.
$181.00
Round Ceiling Register with cover, 2-port Supply
The Round 2-Port Diffuser Box is used in combination with either the Supply Diffuser or the Return Diffuser.
$133.00
Rectangle Register Box for Wall or Ceiling, with White cover
Air throughput box for supply or exhaust air, including mounting brackets for the 3-inch flexible duct and white cover.
$115.00
Rectangle Register Box for Wall or Ceiling, with stainless steel cover
Air throughput box for supply or exhaust air, including mounting brackets for the 3-inch flexible duct and white cover.
$115.00
Mainstream Corporation is a Colorado based Passive House Design, Consulting firm. Specializing in Passive House Products for your building project.
- marker2017 South US HWY 287
Berthoud, CO 80513 - phone303-912-4833
- envelopelearning@mainstreamcorporation.com