Filter Selection Guide

6
Air Filter Selection Guide
Ring Panels, Links, Sleeves
& Cubes
Polyester Panels Links & Cubes
Ring Panel and Cube lters are made by heat sealing
layers of synthetic ltering media together over an
interior, corrosion-resistant steel support frame. An
overcut of media outside the seal forms a built-in
gasket (selvage) between the wire support frame and
holding frame, which secures the lter and prevents
air bypass. This special feature allows these lters
to be installed without the use of retainer fasteners.
Descriptions and model numbers shown below:
Series 425T-Polyester Panel or Cubes
Models 425RT-xxxx Ring Panels and 425LT-xxxx Links, CUBx425T-xxxxxx Cube
Four-ply 1-3/4” nominal media construction, using a 1-1/2” nominal
white/green/white tri-density, multi-denier polyester upstream,with internal
tackification followed by a 1/4” dense white polyester downstream.
Series ST55-Polyester Panel
Models ST55R-xxxx Ring Panel and ST55L-xxxx Link
Two-ply 1” nominal media construction using a 1/2” nominal white polyester
on the upstream, followed by a 1/2” nominal green super tackified polyester
downstream.
Series 325T-Polyester Panel or Cubes
Models 325RT-xxxx Ring Panels and 325LT-xxxx Links, CUBx325T-xxxxxx Cube
Three-ply 1-3/4” nominal media construction, using a 1-1/2” nominal white/
green dual density, multi-denier polyester upstream, with internal tackifica-
tion followed by a 1/4” dense white polyester downstream.
Series 225T-Polyester Panel or Cubes
Models 225RT-xxxx Ring Panel, 225LT-xxxx Link, CUBx225T-xxxxxx Cube
Two-ply 1” nominal media construction, using a 3/4” nominal white polyester
on the upstream, with internal tackification followed by a 1/4” dense white
polyester downstream.