A-J Manufacturing Co., Inc. Datasheets for Air Diffusers and Grilles

Air diffusers and grilles are used to control and direct airflow in heating, ventilation, and air conditioning (HVAC) systems.
Air Diffusers and Grilles: Learn more

Product Name Notes
550 Hinged Filter Grille. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The letters A and J represent the last names...
STANDARDS 304 Stainless Steel #4 Satin Finish 1/4 Turn Fasteners Countersunk Screw holes with Stainless Steel #6 x 1.5" Screws OPTIONS 316 Stainless Steel Filter Frame Anti-Microbial White Powder Coat...
AJ Manufacturing is proud to introduce a customizable ceiling solution engineered to provide the clean air and high-quality LED lighting needed to meet today’s operating room needs. Our new Stainless...
Criti-Clean Ultra: We re-designed and re-engineered our popular Criti-Clean fan powered laminar flow HEPA filter diffuser to maximize both CFM and energy efficiency. Our new Criti-Clean Ultra has the highest...
Reverse flow fan powered filter for filtration of exhaust. Common applications are workspaces involved with hazardous materials where exhausted air may cause a health or environmental threat. Common in medical...
SSFG 150 - Hinged Filter Grille. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The letters A and J represent the...
SSHFG Lattice. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The letters A and J represent the last names of two...
The 150 LT Long Throw Supply Grille provides effective directional control of large volumes of air flow. Custom sizes available. Available with horizontal face bars or vertical face bars. Ideal...
The 150 LT Long Throw Supply Grille provides effective directional control of large volumes of air flow. Each bar is pivoted, which allows for cutsom air flow. The deflector bars...
The 150 Series Single Deflection Supply Grille provides effective directional control of the air stream in one or two directions. The bars are pivoted at the face, giving a uniform,...
The 250 HD Series Heavy Duty Double Deflection Supply Grille provides effective directional control of the air stream. The hollow, air-foil grille front bars are set at a fixed at...
The 250 Series Double Deflection Supply Grille provides effective directional control of the air stream in one, two, three or four directions. Each bank of bars is pivoted at the...
The 250LT Series Long Throw Double Deflection Supply Grille provides effective directional control of large volumes of air flow. Each bar is pivoted which allows for custom air flow. The...
The 250LT Series Long Throw Double Deflection Supply Grille provides effective directional control of large volumes of air flow. Available with horizontal face bars or vertical face bars. Custom sizing...
The 550 LT Series Long Throw Return Air Grille is styled to match the 150 and 250 Supply Grilles. The face bars are non-adjustable and available in either a horizontal...
The 550 Series Heavy Duty Return Air Grille is styled to match the 150 and 250 Series Supply Grilles. The face bars are non-adjustable and available in either a horizontal...
The Egg Crate Series provides 90% Free Area. Bars are 24-gauge Type 304 stainless steel in a ½" x ½" x ½" grid core. Type 316 stainless steel is available...
The FRD Model Flat Face Radial Pattern Diffuser with HEPA Filter has been designed to provide low aspiration at high ventilation rates, especially for clean room applications such as research...
The FRD Model Flat Face Radial Pattern Diffusers have been designed to provide low aspiration at high ventilation rates, especially for clean room applications such as research laboratories, animal labs,...
The HRDP Series Hinged Radial Pattern Diffuser has been designed to provide low aspiration and high ventilation rates especially for clean room applications such as research laboratories, animal labs, food...
The HRDP Series Hinged Radial Pattern Diffuser with Filter is similar to the standard model, however, it incorporates an extended plenum and a unique frame designed to accommodate a Gel...
The lay-in 51% Perforated Supply Diffuser manufactured in type 304 Stainless Steel is designed with surface mount frame for installation.. Adjustable air foil blades with 1, 2, 3, or 4...
The lay-in 51% Perforated Supply Diffuser manufactured in type 304 Stainless Steel is designed with surface mount frame for installation. Adjustable curved blades with 1, 2, 3, or 4 way...
The Series 550 Return Air Grille is styled to match the 150 and 250 Supply Grilles. The face bars are non-adjustable and available in either a horizontal position (H) or...
The Series SSDL Deep Louvered Return Grille is a non-adjustable 1/2" deep return grille made with louvered blades for limited vision on exterior applications. The blades are reinforced from the...
The SFSD Stamped Face Stainless Diffuser is designed with a 360º DEG air pattern delivery to maintain coanda effect even at low air flow rates and minimize smudging. Intended for...
The Spiral Duct Diffuser is used in large areas — factories, warehouses, workshops and gymnasiums — where grilles can be attached directly to the spiral duct which eliminates boots or...
The SS Hemispherical Diffusers feature an adjustable pattern control technology for delivering high volumes of low velocity air in a radial pattern. Each model is constructed using adjustable blades which...
The SSBG Series Stainless Steel Bar Grille uses 1/8? or 1/4? bars with supports 6?-12? on center. Typical bar spacing 1/2? or 1/4? and custom spacing available. The SSBG can...
The SSCB Series Curved Blade Diffuser single deflection supply grille provides effective directional control of the air stream in one or more directions. The bars are pivoted at the face,...
The SSCLCD Series Concentric Louvered Ceiling Diffuser is available in multiple throw patterns and can be built to any opening size for surface or lay-in mounting.
The SSEPD Series Perimeter Slot Diffusers are specially designed to provide an air curtain for operating rooms. The SSEPD Series unique slot design creates a continuous curtain of air, angled...
The SSFG 150 Model Removable Filter Return Grilles and Registers have adjustable horizontal blades (parallel to width/first specified dimension) spaced on ¾" (19) centers with adjustable deflection. The grille core...
The SSFG 550 HD Model Removeable Filter Return Grilles and Registers have fixed horizontal blades (parallel to width/first specified dimension) spaced on ¾" (19) centers with 45° straight face deflection.
The SSFG 550 Model Removeable Filter Return Grilles and Registers have fixed horizontal blades (parallel to width/first specified dimension) spaced on ¾? (19) centers with 45° straight face deflection. The...
The SSFG PERF Series Removable Perforated Filter Grille. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The letters A and J...
The SSFG-EC Series ½" x ½" x 12? Egg Crate Filter Grille is hinged in our 1000 Plaster Frame and secured with low profile ¼-turn fasteners. The removable filter grille...
The SSFG-SSG Model Removable Filter Return Grilles and Registers have adjustable horizontal blades (parallel to width/first specified dimension) spaced on ¾" (19) centers with adjustable deflection. The grille core is...
The SSG Series Louvered Return Grille is a non-adjustable return grille made with louvered blades for limited vision or exterior applications. The blades are reinforced from the rear on approximate...
The SSHFG PERF Hinged Perforated Filter Grille Series.
The SSHFG-EC Series ½" x ½" x 12" Egg Crate Hinged Filter Grille is hinged in our 1000 Plaster Frame and secured with low profile ¼-turn fasteners. The hinged filter...
The SSHFG-SSG Hinged Filter Louvered Return Grille is a non-adjustable return grille made with louvered blades for limited vision or exterior applications - and set within our set within our...
The SSLBG Series Linear Light Duty Bar Grille is designed for supply or return air in sidewall or sill installations. Designed with fixed 0° air foil blades parallel to the...
The SSLF 2C is a 'Critical Environment" laminar flow diffuser. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The letters A...
The SSLF Series Laminar Flow Ceiling Diffusers utilize the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLF Series produce a non-aspirating, low-velocity, uniformly distributed downward...
The SSLF Series Medium Capacity Laminar Flow Ceiling Diffusers utilize the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLF Series produce a non-aspirating, low-velocity, uniformly...
The SSLF-HC Series High Capacity Laminar Flow Ceiling Diffusers utilize the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLF Series produce a non-aspirating, low-velocity, uniformly...
The SSLFHFD MC Series Medium Capacity Laminar Flow HEPA Filter Diffuser utilizes the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLFHFD Series produces a non-aspirating,...
The SSLFHFD Series Laminar Flow HEPA Filter Diffuser utilizes the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLFHFD Series produces a non-aspirating, low velocity, uniformly...
The SSLFHFD Series Laminar Flow HEPA Filter Diffuser with LED utilizes the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology, with the addition of an LED Alert...
The SSLFHFD-FP Series “Criti-Clean” Fan Powered Laminar Flow HEPA Filter Diffuser utilizes the well-proven and time-tested concept of vertical air mass ‘laminar flow’ technology. The SSLFHFD-FP produces a non-aspirating, low...
The SSLFHFD-T-HC is a high capacity 'Critical Environment" laminar flow HEPA diffuser. A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The...
The SSMCD Series Modular Single Deflection Ceiling Diffuser is offered for surface mount or lay-in T-bar panels. Available in 1, 2, 3, and 4-way throw patterns, with optional stainless steel...
The SSMLCD Series Surface Modular Louvered Ceiling Diffuser is offered for surface mount or lay-in T-bar panels. Available in 1, 2, 3, and 4-way fixed throw patterns, with optional Stainless...
The SSPD Series Square Panel Diffuser adds a clean, unobtrusive air outlet for any designed ceiling system. Our new satin finish adds a soft, smooth appearance that blends into the...
The SSPERF-Core Perforated Return Air Grille is made to fit standard T-bar ceilings or custom made-to-order sizes.
The SSPERF-R Perforated Return Air Grille can be used for a variety of return air applications from ceilings to sidewalls. Specify: Series S-44 Opposed Blade Damper to make return register.
The SSPERF-S Stainless Steel Perforated Face Ceiling Diffuser with louvered deflectors is an economical solution of providing positive air flow without limiting volume. The 3/16″ round perforations on 1/4″ staggered...
The SSPLT-R Lay-In Perforated Return Diffuser is designed for lay-in applications. Stainless steel transitions are available in square, rectangular and round neck collars and can be supplied with optional dampers...
The SSPLT-S Lay-In Perforated Supply Diffuser is designed to lay flush into a T-Bar ceiling opening. Adjustable with 1, 2, 3 or 4-way discharge pattern for both heating and cooling...
This Louvered Face HEPA Diffuser is specifically fabricated for 'Critical Use Environments.' A-J Manufacturing Company, Inc. was founded in the mid 1920’s and has always manufactured sheet metal products. The...