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- Square/Round Diffusers
- M-Series Louvered Face-Square Neck
- MA Steel, adjustable pattern, square / rectangular neck
MA Steel, adjustable pattern, square / rectangular neck
Square/ Round Diffusers
With a durable aluminum construction, the MA models can be manually adjustable from the face without the use of tools. These diffusers have a removable core and their neck sizes come in 3 increments only.
- The product has removable snap-in cores provide easy access to the mounting margin and neck damper
- The removable snap-in center cores are interchangeable between same size margins
- The standard finish is White (WH) for the MA diffuser
Product Application

Features
- The outer margins have the size and style to match project plans and schedules
- Individual louvers have a horizontal lip to create a tight ceiling air pattern, even at reduced air flows
- The manufacturer will provide published performance data tested in accordance with ANSI/ ASHRAE Standard 70-1991
- Steel Opposed Blade Dampers (SMOBD), Aluminum Opposed Blade Dampers (AMOBD), Steel Plaster Frames (SMF), Aluminum Plaster Frames (ASMF), and Square to Round Adapters (SRM) are available as accessories. Trim frames and dampers are ordered separately and shipped loose for field installation
- For margins, SF and SB, neck sizes available are from 6” x 6” to 24” x 24”
- A square or rectangular inlet is an integral part of the margin assembly. The inner louver assembly is flush with the outer margin with a 1, 2, 3, or 4-way directional pattern
- The inner core assembly is removable in the field, without the use of tools, for easy duct access and installation
- Optional finishes include Mill (ML), Aluminum Paint (AP), Off-White (OW), Flat Black (FB), and Match Paint (MP)
- The optional damper (SMOBD - Steel, AMOBD - Aluminum) will be operable from the diffuser face without the need of removing the spring-loaded inner core assembly
- For margins LT, PL, and YM, available neck sizes are 6” x 6”, 18” x 18”, and 21” x 18”
Benefits

Constructed with a one-piece removable center core which features multiple deflecting louvers.

The horizontal lip on the deflecting louver ensures a tight ceiling air pattern for excellent mixing.

The MA diffuser is adjustable for either a horizontal ceiling pattern or a downward vertical pattern.
Technical Resources
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