Nesbitt - Products
...were originally installed because in many instances, the existing structures will not accommodate the weight of larger units currently available. Existing control zones and duct connections can be maintained without modification as well. Therefore, replacement of complete units can be accomplished quickly and economically to extend the life of existing facilities. See #2.
Fantech: CVS Series Fans - Specifications
...VLC Range Hood Liner HP (Radon Fans) Accessories CVS Series Fans - Specifications Dimensional Data Model A1 A2 C D E F CVS 275A 6 5 11 15 7 6/8 12 All dimensions in inches. *) Duct connections are 1/8" smaller than duct size. Dimensional Data Model A1 A2 C D E F CVS 300A 6 4 13 18 3/4 8 1/4 16 CVS 400A 6 4 13 18 3/4 8 1/4 16 All dimensions in inches. See #3.
MedAir, Inc
...and cooling capabilities in addition to HEPA filtration. These product types also come with a range of options regarding remote electronic monitoring, airflow capacity, and duct connections. In addition to designing and manufacturing MedAir® Systems to meet specification, MedAir, Inc. provides a number of complementary services: Design reviews... See #4.
Environmental Pool Systems, Inc. home of DRY-AIR and VERI-DRY
...1999 HVAC APPLICATIONS MANUAL STATES: “As with any installation, proper duct design and installation is necessary for proper equipment performance. Poorly installed return duct connections, for example, can significantly reduce the performance of a dehumidifier. The following duct construction practices apply to natatoriums: -Fiberglass... See #5.
Cleanroom Systems: Products: Macro Environments
...self-contained Modularity offers ability to relocate or modify Quick, easy installation Offers sensible and latent coil applications Multiple return air openings for variable duct connections Mechanical components easily accessible High quality, brand name components Factory-tested Integrated humidification Integrated electric reheat coils... See #6.
Seasons•4 HVAC Systems
...contractors replacement liability is minimized The old unit is completely measured by a Seasons•4 engineer Seasons•4 guarantees the unit to fit the curb and the duct connections The unit will arrive on-site at the time you choose The pre-charged and tested unit is ready for immediate installation and operation A Seasons•4... See #7.
Cast Iron Fans - Fume Hood Exhaust, Corrosion
All housings are universal and allow rotation and discharge to be changed by disassembling in the field. Housings also have round inlets and outlets for easy duct connections. Available in sizes 1/2 to 6 and in arrangements #1, #2, #4, #9, #9H, 
. Volumes to 3600 CFM and pressures to 18" W.G. (click on photo above... See #8.
Robinson Fans - industrial fan, ventilation fan, blower
In situations involving fan-related expansion, Robinson PW housing units are designed to consider thermal expansion. Attached inlet and outlet duct connections must allow for expansion. Depending on various factors, this expansion allowance may be provided by the use of slip joints or fabricated expansion joints. See #9.
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