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M33 R&L Media Air Filtration System

Media Air Cleaner

M33 RL

The M33 is a self-contained media air cleaning system designed for general background or ducted for source capture applications. The M33 can be ordered with three-stage filtration which will effectively remove a broad range of airborne contaminants including fine dusts, smoke, soot, vapors, mist, VOC’s and more at a rate of up to 1500 cfm.


DIMENSIONS 271/2″H x 141/2″W x 56″L
WEIGHT 200 lbs. installed weight
240 lbs. shipping weight
CABINET 16 gauge welded steel cabinet with a baked enamel, textured coated finish.
POWER INPUT 110 – 120 Vac, 60 hz, 1 phase, 12 amps
208-240 Vac, 60 hz, 1 phase, 6 amps
PRIMARY FILTER Dimensions on the bag filters are 12″ x 24″ x 26″
Stock # Filter CFM=Cubic Feet Per Minute
41128 95-98% Bag 1125 CFM 1.3
41129 85-90% Bag 1250 CFM 1.1
41130 65-70% Bag 1270 CFM 1.0
41131 45-50% Bag 1315 CFM 1.0

* Efficiency based on ASHRAE Dust Spot 52-76.

MOUNTING Standing or hanging cabinet with horizontal airflow. Ceiling mount brackets – standard.
PREFILTER 30-35% efficiency, pleated 12″ x 24″ x 4″. Filter media is a cotton and synthetic blend. Total prefilter media area is 15 sq. ft.
MOTOR 1 HP sealed ball bearings and thermally protected. Adjustable motor sheave allows for field adjustments to the rated air flow.
BLOWER Forward curved, ball bearing, belt driven centrifugal blower. This blower is capable of moving 2250 cfm free air.
INSTRUMENTATION Dirty Filter Gauge – Factory installed pressure gauge designed to determine filter replacement cycle.
Indicator Light – Light indicates that the blower motor is energized properly.
FILTER ACCESS Side load track system with hinged access door.
SOUND LEVELS 72 dBa at 9′, 70 dBa at 12′.


  • 36 month parts warranty
  • One HP maintenance-free motor
  • Dirty filter gauge
  • 35% efficient 4″ pleated prefilter
  • 10′ power cord with molded plug


  • Impinger assembly for mist applications
  • Plenum, ducting and hood accessories
  • 2 HP motor upgrade
  • Extended service filter upgrade
  • 65% ASHRAE prefilter
  • Minihelic® upgrade
  • Bulk refillable carbon module

M33 L media air filtration system

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Air Quality Engineering

Air Quality Engineering