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Flanders PrecisionAire ~ Foremost in Air Filtration
Toll Free
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1-800-637-2803
1.0 General
1.1 Medium and high efficiency self-supporting filters
shall be Rigid-Air lofted fiberglass or micro-fine
synthetic media rigid filters as manufactured by
Flanders Precisionaire.
1.2 Filter sizes, efficiencies and capacities shall be
as scheduled on the drawings.
2.0 Filter Construction
2.1 Filters shall be constructed of lofted micro-fine
fiberglass or micro-fine synthetic media
laminated to a non-woven backing, bonded to
an expanded metal wire grid and pleated to form
the filter pack.
2.2 The filter pack shall be strengthened on the air
entering and air exiting sides with horizontal and
diagonal metal support members.
2.3 The enclosing frame shall be assembled in a
rigid manner and shall incorporate a header on
the air entering side if required by the application.
2.4 The filter pack shall be sealed into a 24 ga.
corrosion-resistant steel casing with metal or
plastic pleat separators on the upstream and
downstream sides to maintain pleat
configuration.
3.0 Performance
3.1 Initial and final resistances shall not exceed the
scheduled values.
3.2 Media area must equal or exceed that of the
specified filter.
3.3 The average efficiency shall be as determined
by the ASHRAE Standard 52.1 test methods.
3.4 The Filter shall meet MERV 10-14 as determined
by ASHRAE Standard 52.2 test standards.
3.5 The manufacturer shall guarantee performance
as stated in its literature within tolerances as
outlined is Section 7.4 of ARI Standard 850.
3.6 Filters to be UL 900 Class 2 or 1 listed.
Guide Specifications
Application Guidelines
Rigid-Air filters may be used wherever job
requirements and available space will
accommodate 6" or 12" deep filters. Rigid-Air filters
should be selected using 24" x 24" and 24" x 12"
face sizes. This allows for 12" increments in height
and width of the filter bank and insures that
replacement cartridges will be readily available.
Rigid-Air filters should be installed with pleats vertical
wherever possible. It is permissible to install 24" x
12" face size cartridges with pleats horizontal if
necessary to meet the size requirements of the filter
bank.
VAV Systems
Filter banks should be sized so that the maximum
rated flow at design conditions falls within the
published recommended velocities. Rigid-Air filters
may be applied at any capacity between zero flow
and cataloged capacities.
Hospital Applications
Rigid-Air filters may be used on the downstream
side of the supply fan in hospitals if they are far
enough from the fan so that the high fan discharge
velocity will not affect them. Rigid-Air rigid filters can
withstand adverse air flow conditions better than
bag filters and are the preferred selection for these
applications.
Gasketed Headers
Rigid-Air headered filters installed in Flanders K-
Trac Filter Framing Modules or Sureseal Side
Access Housings require gaskets on opposite
header sides to prevent air bypass.
To specify headered version Rigid-Air filters with
gasketed headers, add suffix “SA” (side access),
“GU” (upstream), “GD” (downstream) and “GS”
(sides) to the model number.
Flanders ~ PrecisionAire
Foremost in Air Filtration
Toll Free
:
1-800-637-2803
Representative