Round Ceiling Diffuser Series: 900 Aluminum fixed round ceiling diffuser. Economical high performance unit, available with optional damper(900-D).	Steel High Capacity Round Ceiling Diffuser Series: 3100S Low profile, steel fixed 2-cone round ceiling diffuser for high capacity applications. Model 3100S-1A can be adjusted from vertical to horizontal discharge.
Adjustable High Capacity Round Ceiling Diffuser Series: 3100S-1A Low profile, steel adjustable 2-cone round ceiling diffuser for high capacity applications. This 3100 series diffucer can be adjusted from vertical to horizontal discharge.	Perforated T-Bar Ceiling Diffuser with Fiberglass Plenum Series: 7300R-6 The series 7300-6 steel faced perforated supply diffuser is an economical diffuser with a fiberglass plenum, designed to allow field installation of the inlet collar(by others). The face of the diffuser is non-removable and includes a pattern controller set for a circular 360deg. round discharge air pattern. The 7305-6 model includes adjustable air deflectors, and the 7300R-6 return model does not include a disk or deflector.
Perforated T-Bar Ceiling Diffuser with Fiberglass Plenum Series: 7300-6 The series 7300 steel faced perforated supply diffuser is an economical diffuser with a fiberglass plenum, designed to allow field installation of the inlet collar(by others). The face of the diffuser is non-removable and includes 1-4 way pattern controllers on the 7310-6 model, a round target disk on the 7320-6 model, and the 7330-6 return model that contains no disk or pattern controller.	Perforated Face Supply Diffuser for T-Bar Ceilings Series: 7500-6 The series 7500 steel supply perforated ceiling diffusers have a round neck and face mounted adjustable pattern controllers making this series an excellent choice for VAV applications. Patterns controllers are adjustable from vertical to horizontal discharge patterns.
Perforated Face Return Diffuser for T-Bar Ceilings Series: 7500R-6 The series 7500R steel return perforated ceiling diffusers have a round neck and face mounted adjustable pattern controllers making this series an excellent choice for VAV applications.	Perforated Face Return Diffuser for T-Bar Ceilings Series: 7550R-6 Steel perforated filter return ceiling diffuser with round neck. Hinged perforated face allows direct access to the filter(by others).This series matches applications where 7500 series supply diffusers are required.
Non-Ducted Perforated Face Return Diffuser Series: SPRTB SPRTB is an economical choice for non-duct plenum return applications and is shipped without pattern controllers. Units are also offered with an optional T-bar plaster frame for a more concealed appearance.	Aluminum Louver-Face Ceiling Diffuser Series: 5200 Aluminum economical square face ceiling diffuser. Unit includes a removable core for concealed mounting. Units are available with a choice of pattern controller configurations, and optional built-in opposed blade dampers. Available with a flush frame(-1), bevel-frame(-2), or T-Bar frame(-6).
Steel Louver-Face Ceiling Diffuser Series: 4700 4700 steel 2-cone square-faced ceiling diffusers with round necks provide a tight horizontal 360 degree discharge pattern, and offer circular air patterns for high capacity applications. Avilable with optional steel dampers and foil backed insulation(on model 4706). The 4700 series also has a 2" inlet collar with turned edges for easy installation and a tight seal.	Steel Square Directional Panel Face Ceiling Diffuser Series: 4750-6 Steel-face, architectural plaque-type ceiling diffuser includes a panel that can be removed without tools, and provides a tight 360 degree discharge pattern for superior induction. Available with optional round damper, and foil backed insulation(model 4756).
Steel 3-Cone Louver Face Ceiling Damper Series: 4800 Steel, 3-cone louver face diffuser, provides a tight 360 degree discharge pattern for superior induction. Available with optional round damper, and foil backed insulation(model 4806).	Steel Square/Rectangular Louver Face Insulated Ceiling Diffuser Series: 5500 SI Steel square/rectangular louvered face ceiling diffuser, with spring loaded latches, designed for easy removal of cores. Straight deflector blades and 4 way air pattern controller make this diffuser excellent for high capacity and/or VAV systems.
Steel Louver Face Ceiling Diffuser Series: 5900 Steel 2-cone high capacity square face diffuser with round neck provides a tight horizontal 360 degree discharge pattern, and can be converted to a 3-cone diffuser with the addition of the optional snap-58 component. Available with foil insulated backpan(model 5906-6), and with a plaque-style face(model 5956-6).	Concentric Supply/Return Ceiling Diffuser Series: 5000 DAF-CC5 Concentric louver face, cube-core supply/return ceiling diffuser, designed for high capacity applications. Simple installation with snap-in core.
Linear Slot Diffuser Series: 6600 The 6600 series aluminum linear slot diffusers are an excellent choice for continuous linear applications, providing a clean appearance and easy installation. Base models in the 6600 series include: 6650(1/2 inch slot width), 6675(3/4 inch slot width), 6100(1 inch slot width). Models also avilable in 2' and 4' lengths.	Plenum Slot Diffuser for T-Bar Ceilings Series: PHP Steel supply/return plenum slot diffusers with heavy duty extruded aluminum pattern controllers, and gasket for tight horizontal air discharge patterns. Field adjustable pattern controllers allow the throw to be changed from vertical to horizontal. Low pressure drop return models(PHPR), and insulated models(PHPI) are also available.
Snap-On Diffuser Cone Series: Snap-59 The Snap-58 snaps on to the unit to convert a 2-cone ceiling diffuser to a 3-cone unit	Snap-On Collar Series: Snap-58 The Snap-59 snap-on collar permits an easy an tight connection to flex duct from the diffuser by providing a 1 1/4" high collar.