Price offers a variety of products with
replaceable high efficiency filters. All filtered
models are room-side replaceable and are
equipped with an easily removable face,
allowing for the replacement of the filter
without access to the ceiling or ductwork.
The filter is attached to the diffuser with
four cam-type retainers which provide
positive fastening and easy removal. A
gel seal filter frame and knife-edge flange
provide a leakproof seal between the filter
and housing. Several grades of filter are
offered, as per the chart on this page.
High efficiency filters for Price diffusers are
a 2 in. (51) or 3 in. (76) thick separatorless
construction in anodized aluminum frames.
See next page for installation details.
The filter media is fabricated using a
moisture-resistant microfine fiberglass
that is formed into closely spaced pleats,
held firmly in place with polyurethane
sealant bead separators. This separatorless
construction allows for more compact
pleating of the pack than separator-type
filters. Therefore, a 2 in. separatorless
filter element contains approximately the
same amount of media as a 6 in. deep
separator-type filter. Separatorless filters
are recommended for critical applications
because the aluminum separators in
separator-type filters can oxidize and
contribute to particle contamination.
The room-side replaceable filter frame cavity
is filled with a silicone gel seal designed to
provide an airtight seal between the filter
and the filter housing. The seal remains
stable and self-healing under the most
demanding conditions, yet allows the filter
to be easily removed and replaced. The gel
is highly self-adhesive and will not stick to
the filter housing when the filter is removed.
The filter frame cavity is 100% sealed,
providing an airtight seal between the
filter and the filter housing. The seal
remains stable under the most strenuous
Filters will be packaged separately from
the filter housing and shipped directly
from the filter manufacturer to the jobsite.
This is to minimize the risk of damage
to the filters during transportation and
handling. Filters should be removed from
their cartons and installed once the system
has been cleaned and blown down with
both roughing and pre-filters in place.
All installations should be operated with
roughing (30% ASHRAE efficiency) and
pre-filters (90% ASHRAE efficiency). It is
recommended that these two stages be
utilized, which will extend the high efficiencyin such a manner, the filter should provide
years of service.
A periodic (annual) check of air flow is
recommended. When the filter throughput
declines to an unacceptable level due to
particle accumulation, the filter should be
replaced. Contact Price Customer Service
for replacement information.