General Product Overview - Ceiling Diffusers

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Ceiling Diffusers

• Comprehensive range of models and styles to choose from.
• Versatile selection and sizing ensures the correct product for any specific application.
• Material choice of steel or aluminum for most models. Cost effective steel or premium quality aluminum. Unique in our manufacturing process is the exclusive use of corrosion-resistant coated steel as used in the automotive industry. The material has superb forming qualities and outlasts painted cold-rolled steel by up to three times.
• Various border/frame types, combinations and mounting options.
• Balancing accessories.
• Various finishes.
• Performance data in accordance with current international test standards and the back-up of one of the finest 'in-house' testing laboratories in North America.

Ceiling Diffusers

Square and Rectangular Pattern
Nailor’s pattern diffusers are typically used in applications where considerable volumes of air are required while maintaining relatively low noise levels and pressure drops. A full range of models are available and consist of a choice of corrosion-resistant steel or aluminum construction, fixed and adjustable patterns, as well as extra high capacity models. Induction vanes are also available for those jobs that require quick equalization of cool and warm air such as in VAV systems with high cooling loads. The louvered cores are removable and are available in an assortment of patterns.
Steel Construction –
• Models 6500 Fixed Pattern, 6550 Adjustable Pattern, 6550IV Induction Vane, Suffix '-O' adds a steel OBD
Aluminum Construction –
• Models 6200 Fixed Pattern, 6250 Adjustable Pattern, 6500IV Induction Vane, Suffix '-O' adds a steel OBD,Suffix '-OA' adds an aluminum OBD
Aluminum High Capacity –
• Models 6400 Fixed Pattern, 6400IV Induction Vane, Suffix '-O' adds a steel OBD,Suffix '-OA' adds an aluminum OBD

Stamped Square
These diffusers are a very popular choice for general air distribution applications. The diffusers are designed to provide high performance at a cost effective price. The stamped one-piece cones and die-formed clean curves supply a 360° diffusion pattern and provide the high performance necessary in VAV systems. Integral round necks provide a secure connection for flexible duct applications. Nailor’s "classic" four-cone, removable core design is available in most ceiling module sizes, a choice of corrosion-resistant steel or aluminum, and an option of fixed or adjustable patterns. A two-cone fixed pattern diffuser also accompanies this series.
Fixed Pattern –
• Models RNS – Steel Construction, ARNS – Aluminum Construction
Adjustable Pattern –
• Models RNSA – Steel Construction, ARNSA – Aluminum Construction
Fixed Pattern Two Cone –
• Models RNS2 – Steel Construction

"Twister" High Induction Stamped Face
The "Twister" diffuser is engineered to optimize air distribution effectiveness. This next generation diffuser has a high induction, 360° swirl pattern for a superior coanda effect. It is available for a 2' x 2' (600 x 600) ceiling module with a choice of five round neck sizes.
"Twister" –
• Model TWR


Architectural Square
Designed with the architect in mind, the diffusers in this series are fashioned to blend in with most ceiling types in order to create the ultimate in aesthetic looks. Nailor has accomplished this whilst still offering a variety of diffuser designs that provide flexibility in both style, selection and engineering performance.
Flat Panel –
• Models UNI Steel Construction, AUNI Aluminum Construction, UNI-RC Steel with Ceiling Tile
Downblast –
• Models UNI-PD Steel Fixed Perforated, UNI-AD Steel Adjustable
Ceiling Tile Slot –
• Model Series 5000CTD Supply, 5000RCTD Return
Plaque Face –
• Model 6600 Steel Construction
Plaque Face with Perimeter Slots –
• Model 66UNI Steel Construction

Round
Nailor’s round diffusers are available in steel or aluminum construction, with adjustable or fixed patterns. Included in this series of diffusers is a 'Plaque' style for architectural ceilings and a 'Downblast' type for high ceiling areas.
Adjustable Horizontal Pattern –
• Models RNR Steel Construction, ARNR Aluminum Construction
Two Position Horizontal/Vertical Pattern –
• Model 6300 Aluminum Construction
Fully Adjustable Horizontal/Vertical Pattern –
• Model 6300R Aluminum Construction
Plaque Face Horizontal Pattern –
• Model R-UNI Steel Construction
Downblast Adjustable Horizontal/Vertical Pattern –
• Model RDB Steel Construction
Perforated Ceiling Diffusers - Supply Air

Adjustable Pattern Deflectors on Face
The stamped deflectors for this series of models are mounted in a 4-way discharge pattern on the rear of the perforated face and can be easily field adjusted to a 1, 2,or 3-way pattern. These diffusers are available with round or square necks. For the matching return, see Model Series 4360/4365.
Flush Face –
• Steel – Models 4320A Aluminum Face , 4320AA Aluminum
• Drop Face Steel – Model 4325A Aluminum Face , 4325AA Aluminum

Curved Blade Pattern Controllers
The curved blade pattern controllers are individually adjustable and available as standard in a 4-way discharge pattern. The blades are mounted directly beneath the neck of the diffuser. A1, 2, or 3-way discharge pattern is available as an option. These diffusers are offered with round or square necks. For the matching return, see Model Series 4360/4365.

• Flush Face – Models 4320CB Steel, 4320A Aluminum Face , 4320AA Aluminum
• Drop Face – Models 4325CB Steel, 4325A Aluminum Face , 4325AA Aluminum

Full Face Curved Blade Pattern Controllers
This grille frame style, full face diffuser features curved blade pattern controllers with extruded aluminum frame sand blades, and a perforated face that is offered in either corrosion-resistant steel or aluminum. The curved blade pattern controllers are individually adjustable and are in a 4-way discharge pattern as standard. A1, 2, or 3-way discharge pattern is available as an option. These diffusers are available with square necks only. For the matching return, see Model Series 4340R.
Flush Face –
• Models 4340CB Steel Face, 4340CBA Aluminum

Fixed 4-way Pattern
The single heavy gauge stamped deflector in this series has a fixed 4-way discharge pattern. This ensures the air pattern and performance remain constant. These diffusers are available with round or square necks. For the matching return, see Model Series 4360/4365.
Flush Face –
• Models 4320F Steel , 4320FA Aluminum Face
Drop Face –
• Models 4325F Steel, 4325FS Aluminum Face

Modular Core, Square Neck
This perforated diffuser has four individual, corrosion-resistant steel, spring-loaded modular pattern controllers that are mounted in the neck of the diffuser. They are shipped in a 4-way discharge pattern and can easily be field adjusted to provide a 1, 2, or 3-way discharge pattern. These diffusers are available with square necks.For the matching return, see Model Series 4360/4365.
Flush Face –
• Models 4320M Steel , 4320MA Aluminum Face
Drop Face –
• Models 4325M Steel, 4325MA Aluminum Face

Modular Core, Round Neck, Low Profile
This model has a low profile backpan that includes an integral round neck. It incorporates four individual, corrosion-resistant steel, spring loaded modular pattern controllers that are mounted inside the backpan. The modular cores are shipped in a 4-way pattern and can easily be field adjusted to provide a 1, 2, or 3-way discharge pattern. These diffusers are available with round necks only. For the matching return, see Model Series 4360/4365.
Flush Face –
• Models 4320MR Steel , 4320MRA Aluminum Face
Drop Face –
• Models 4325MR Steel, 4325MRA Aluminum Face

Full Face Modular Core
This grille frame style, full face diffuser, features an extruded aluminum frame with a corrosion-resistant steel modular core. The modular core is shipped in a 4-way pattern and can easily be field adjusted to provide a 1, 2,or 3-way pattern. These diffusers are available with square necks only. For the matching return, see Model Series 4340R.
Flush Face –
• Models 4340M Steel Face, 4340MA Aluminum Face

Premium, Adjustable Deflectors on Face
The perforated diffusers in this series have an extruded aluminum frame with a narrow border that is visible within the T-Bar module. The stamped steel deflectors are mounted in a 4-way discharge pattern and can be easily field adjusted to a 1, 2 or 3-way pattern. The diffusers are available with round or square necks. For the matching return, see Model Series 4330R.

Flush Face –
• Models 4330 Steel Face, 4330A Aluminum Face


Premium, Curved Blade Pattern Controllers
The perforated diffusers in this series have an extruded aluminum frame with a narrow border that is visible within the T-Bar module. The extruded aluminum curved blade pattern controllers are individually adjustable and are in a 4-way discharge pattern as standard. A 1, 2, or 3-way discharge pattern is available as an option. For the matching return, see Model 4330R.

Flush Face –
• Models 4330CB Steel Face, 4330CBA Aluminum Face


All Aluminum for MRI Rooms
This diffuser is 100% aluminum and can be used for MRI rooms. It features a smooth, contoured wrap-around perforated face. The supply air diffuser includes a round disc pattern deflector that provides a true 360° radial horizontal air pattern. The matching return air diffuser is suitable for ducted return applications.

Flush Face –
• Models 4310A Supply Air, 4310AR Return Air
Pattern Ceiling Diffusers - Return Air

Standard Backpan Design
This perforated return diffuser is designed with a backpan that allows for both ducted and non-ducted applications. Available with a round or square neck for ducted applications and a full face design, square neck for either ducted or non-ducted applications. See Model Series 4320/4325, 4320CB/4325CB, 4320F/4325F and 4320M/4325M for the matching supply air diffusers.
Flush Face –
• Models 4360CB Steel, 4360A Aluminum Face, 4360AA Aluminum
Drop Face –
• Models 4365 Steel, 4365A Aluminum Face, 4365AA Aluminum

Extruded Frame
This grille frame style, full face diffuser has an extruded aluminum frame and is offered with a choice of a corrosion-resistant steel or an aluminum perforated face.The diffusers are available with square necks only and can be used in both ductless and ducted applications. See Model Series 4340CB and 4340M for the matching supply diffusers.

Flush Face –
• Models 4340R Steel Face, 4340RA Aluminum

Panels
This economical perforated return panel is for use in a ductless return or as an exhaust grille in exposed grid T-Bar ceiling systems. When installed, the appearance matches that of the 4320/4325, 4320CB/4325CB, 4320F/4325F and 4320M/4325M supply diffusers.
Flush Face –
• Models 4302 Steel, 4302A Aluminum
Drop Face –
• Models 4302-DF Steel, 4302-F Fineline® Steel

Premium
This perforated return has an extruded aluminum frame with a narrow border that is visible within the T-Bar module. See Model Series 4330 and 4330CB for the matching supply air diffusers.
Flush Face –
• Models 4330R Steel Face, 4330RA Aluminum Face

Eggcrate Return
This aluminum face return diffuser features 1/2" x 1/2" x1/2" (13 x 13 x 13) eggcrate that provides a high free area. It is offered with either a round or square neck for ducted return applications. The back pan or frame is available in both corrosion-resistant steel and aluminum construction.

• Models 4260 Steel Frame/Backpan, 4260AA Aluminum

Modular Core

Modular Core
This steel diffuser has four individual, corrosion-resistant steel, spring-loaded modular pattern controllers. The pattern controllers are shipped in a 4-way discharge pattern and can easily be field adjusted to provide a 1, 2,or 3-way discharge pattern. They are available with square necks and optional round transitions.
Modular Core
• Model 7500 Steel, Suffix '-O' adds a steel OBD
Curved Blade

Curved Blade
The curved blade deflectors for this diffuser are individually adjustable and integrated in a modular sized panel to suit many ceiling systems. If ordered with directional vanes a 1 or 2-way discharge pattern is available. If directional vanes are not required, the curved blade deflectors are offered in a 1, 2, 3, or 4-way discharge pattern.
Steel Construction –
• Models 61CCD Directional Vanes, 61CC No Directional Vanes
• Aluminum Construction Directional Vanes – Model 51CCD
• No Directional Vanes – Model 51CC
Light Troffer Diffusers

Options & Accessories
Nailor offers an extensive selection of accessories for ceiling diffusers. Air balancing devices, air extractors and a selection of mounting frames are several of the accessories available.
Options –
• Mounting Frames
• Options
• Finishes
Accessories –
• Air Balancing Devices
• Volume Extractors