MODEL 24 LP
DUCTED ROOM-SIDE REPLACEABLE CLEANROOM MODULES
Gel & knife edge filter seal for positive leak-tightness
Filters replaceable from the room-side
No penetrations of the pressure boundary
2" filter pack for a lightweight and low profile design
In-room air flow damper adjustment with Flanders
proprietary damper adjustment alignment system
GENERAL
Flanders Model 24 LP room-side
replaceable HEPA/ULPA filter modules
are lightweight, low profile ducted units
with gel seal minipleat or separatorless
filter packs. They are designed to
provide unidirectional airflow when
installed in drywall or tee-bar ceilings.
Model 24 LP modules are available
in three sizes: nominal 24" x 24",
24" x 36", and 24" x 48" for either 1
1/2" or 2" T-bar with 8", 10", 12" or
14" diameter inlet collars and in two
particle size efficiencies: 99.99% on 0.3
micron and 99.9995% on 0.12 micron
particles. Every filter is scan-tested after
assembly to meet or exceed IEST RP-1
requirements for a type C or F filter.
CONSTRUCTION
The state-of-the-art filter pack is sealed
in an anodized extruded aluminum
frame. The sides of the filter pack
contain an integral extruded channel
that holds Cleanroom quality sealing
gel. The filter's extruded aluminum
center divider is furnished with a port
for in-room baffle plate adjustment and
measurement of challenge aerosol. The
one-piece hood/inlet collar is made of
spun aluminum and the inlet collar is
ribbed to secure the flex duct retaining
strap.
A 22 gauge, 40% open, perforated
grille protects the media pack (grille
can be either stainless steel, anodized
aluminum or a white powder coated
steel face).
INSTALLATION &
APPLICATION
Model 24 LP modules may be
used in Cleanrooms for biotech
and pharmaceutical manufacturing,
hospital pharmacies, for the fabrication
of medical devices, and in other
applications requiring ultra-clean air and
a room-side replaceable filter element.
Holes are drilled on the module's top
four corners to secure seismic restraint
wires or hang the unit. The standard
face velocity range of 70 to 110 FPM
is easily adjusted from the room-side
by a screwdriver operated damper.
Static pressure and challenge aerosol
measurements can be taken through
a separate room-side port. Flanders
does not recommend using the aerosol
port as a means to inject the aerosol
of choice. Standard construction
allows the modules to be operated at a
pressure drop of 3.0" w.g.
diameter inlet collars. Optional one inch
thick vinyl-backed fiberglass insulation
can be applied to the top and/or sides of
the module. The standard design utilizes
an adjustable baffle plate, however a split
butterfly damper and a fixed distribution
plate is also available.
PHYSICAL DATA
MEDIA: Water-resistant, microfine,
fiberglass or synthetic as required
FILTER PACK: Separatorless or Thermal
Pleat Design, 2.1" (53mm) thick
GEL SEAL: Silicone or urethane base
MEDIA SEALANT: Flame retardant
polyurethane
FILTER FRAME: Anodized extruded
aluminum with integral gel filled channel
HOOD: Extruded anodized aluminum with
spun inlet collar
DAMPER: Adjustable or fixed baffle plate
and optional split butterfly damper
PROTECTIVE GRILLE: As specified
DIVIDER: Extruded anodized aluminum
OPTIONS
Model 24 LP modules are available with
nominal 8", 10", 12" or 14"
HPP_M24LP_1
1
www.flanderscorp.com
800.637.2803
Housing Model #
LP22-1-X*_-Z**
LP23-1-X*_-Z**
LP24-1-X*_-Z**
LP22-2-X*_-Z**
LP23-2-X*_-Z**
LP24-2-X*_-Z**
Overall Size
T-Bar
Weight
Design Air Flow
(in.)
(in.)
(lbs.)
(CFM)
23-5/8 x 23-5/8
23-5/8 x 35-5/8
23-5/8 x 47-5/8
23-1/8 x 23-1/8
23-1/8 x 35-1/8
23-1/8 x 47-1/8
1-1/2
1-1/2
1-1/2
2
2
2
25
30
35
25
30
40
400
600
800
400
600
800
Unit Resistance
(" w.g.)
HEPA
ULPA
0.67
0.67
0.67
0.67
0.67
0.67
0.78
0.78
0.78
0.78
0.78
0.78
X = Add F for Fixed Baffle, A for Adjustable Baffle, or B for Split Butterfly Damper
* = Add 8 for 8', 0 for 10", 2 for 12" or 4 for 14" Inlets
_ = Add A for Anodized Aluminum Grilles, P for Standard Painted White Grilles, and S for Stainless Steel Grilles
Z = Add A for Anodized Aluminum Construction or P for Painted White Construction
** = Add N for No Insulation, T for Top Insulation, or B for Insulation on Top and Sides
Sample Model # LP24-1-F2A-AN - Filter ordered separately and must be 2" deep
Sample Filter Model #
Fixed Baffle:0-007-2-19-06-SU-52-00-21A45A
Adjustable Baffle or Split Butterfly Damper:
E-007-2-19-06-SU-52-00-21A45A
E - indicates extruded centerboard with adjustment port
1-PIECE SPUN ALUMINUM
DUCT COLLAR WITH DIMPLE
1
Ø8" HANGING HOLES
6.875 8.250
ALUMINUM LID
ALUMINUM HOUSING
W
GEL-FILLED CHANNEL
FILTER RETAINER AND NUT
L
DIFFUSER SCREEN
DIFFUSER SCREEN RETAINING
NUT AND WASHER
GUIDE SPECIFICATIONS
1.0 GENERAL
2.5 The protective face grille shall be as specified.
1.1 Terminal HEPA/ULPA filter modules shall be Model 24 LP Gel Seal as
manufactured by Flanders Corporation.
2.6 Provide an airflow damper adjustable from the room-side and
accessible through a port with a removable plug located in the center
divider.
1.2 Module sizes, efficiencies and capacities shall be as scheduled on
the drawings.
2.0 MODULE CONSTRUCTION
2.1 The module filter pack shall be 2" (53 mm) thick and constructed of
weather-laid microfine fiberglass media containing a water repellent
binder. The media shall be formed into closely-spaced pleats held in
position by dimple pleat or minipleat design.
2.2 The filter pack shall be polyurethane-sealed into a clear coat anodized
extruded aluminum frame and rectangular tube section center divider.
2.3 The filter frame shall include an integral gel-filled channel that shall
mate with a knife edge integral with an anodized aluminum housing. .
2.4 Module top/inlet collar shall be one-piece aluminum
2.7 Provide a separate port in the center divider that is open to the inlet
side of the filter for measurement of static pressure and challenge
aerosol concentration the port shall be fitted with a removable plug.
3.0 PERFORMANCE
3.1 Initial resistance shall not exceed the scheduled values.
3.2 The adjustable airflow baffle shall be capable of regulating the
module face velocity from 70 FPM to 110 FPM. The baffle is not
capable of fine tuning and Flanders recommends the use of a split
butterfly damper if fine adjustments are required.
3.3 The filter pack shall be replaceable from the room-side without
disturbing the module housing.
HPP_M24LP_1
2
www.flanderscorp.com
800.637.2803