Specifications

3
Built Rugged for Dependable Performance
Corrugated Aluminum Separators with
Rolled Edges maintain uniform pleat
spacing for optimum airflow. The
separators are rolled to eliminate sharp
edges, preventing media damage during
shipping and personal injury during
installation.
Crimped Rear Flanges (SH) are rolled
over and riveted to add strength,
eliminate sharp edges, and prevent
bypass leakage.
Media Pack Restraint
Steel brace on air leaving side adds
support to the media pack.
Media Pack Sealant — A layer of high
efficiency media seals the media pack into
the cell sides. The media sealant prevents
by-pass leakage and damage to the
media and separators during shipping and
handling. By allowing slight movement of
the media pack when the filter is jarred,
the cushioning sealant helps prevent tears
and punctures to the media.
VariCel's rigid construction
with supported pleat media
pack maintains a compact,
unitized structure even under
tough operating conditions.
Variable air velocity and
repeated fan shutdown do
not compromise performance.
Unitized Construction
Interlocked header and cell
sides, along the entire length
of each side, provide maximum
sealing. Competitive filters are
designed with loose fitting
headers which allow greater
potential for bypass leakage.
VariCel
Construction
Header
Cell Side
Header
Cell Side
Potential Leak Path
Typical
Competitive
Construction
Pleats and Separators
Bonded For Strength
During the pleating process,
spots of glue are applied to bond
each separator to the adjacent
pleat. This solidifies the media
pack to minimize movement and
prevent media damage. Burst
strength is increased to prevent
the filter from blowing out under
variable air volume conditions
or unusually high resistance.
Galvanized steel headers and
cell sides resist damage during
shipping and handling, and
prevent corrosion over long
service life. (HT VariCel filters are
constructed of aluminized steel.)
Easy Installation
Rigid construction and minimum
depth make VariCel filters easy
to install in all types of systems.
Dual Density Media Reduces Operating Costs
VariCel media is manufactured
with two layers of glass fibers:
coarser fibers on the air entering
side, and finer fibers on the air
leaving side.
Our dual density design allows
dirt particles to be collected
throughout the entire depth of
the filter utilizing the full cleaning
potential of the media. Maximum
dust holding capacity extends
the life of the filter, minimizing
operating costs.
The water resistant media can withstand intermittent exposure to
water, making VariCel filters ideal for installations in humid areas or
where the filters are exposed to moisture.
FINER FIBERS
Air leaving side
COARSE FIBERS Air entering side
AIRFLOW