Medium-Efficiency Separator Filter - Medium Filters | Baisheng Tech
Product ID:medium-separator-filterMedium FiltersMedium Filters
Medium Filters

Medium-Efficiency Separator Filter

Product Overview

A medium-efficiency separator filter is a rigid, box-type medium filter with aluminum separators: glass-fiber media is pleated deeply, with aluminum separators holding the pleats apart inside a box frame. Efficiency 65 / 85 / 95%; depth mainly 290/292 mm, also 150 mm. In the same 610×610 opening at 95% and about 132 Pa initial pressure drop, the 150 mm depth is rated at 17 CMM and the 290 mm depth at 31 CMM. Frames in galvanized steel, aluminum, wood or stainless steel, in box, single-header or double-recessed styles. It is not a bag filter.

Key Specifications

Filtration Efficiency
65 / 85 / 95%
Depth
290 / 292 / 150 mm
Filter Media
Ultra-fine glass fiber with aluminum separators layering the media for even airflow
Frame
Aluminum, galvanized steel or stainless steel frame; flat or single-flanged
Filter Media
Ultra-fine glass fiber with aluminum separators layering the media for even airflow
Frame
Aluminum, galvanized steel or stainless steel frame; flat or single-flanged
Separator
Aluminum separators
Filtration Efficiency
65 / 85 / 95%
Depth
290 / 292 / 150 mm
ModelDescriptionSize
SH65-24-24-12-GAGalvanized frame medium efficiency filter 65% 24X24X12" aluminum separators24 × 24 × 12″
SH95-610-305-150Aluminum separator type HEPA 95% 610X305X150mm galvanized frame, double gasket610 × 305 × 150 mm
SM-595-295-290-RALMedium efficiency filter 95% 595X295X290mm aluminum single-flange frame, aluminum separator type595 × 295 × 290 mm
SM-595-595-290-RALMedium efficiency filter 95% 595X595X290mm aluminum single-flange frame, aluminum separator type595 × 595 × 290 mm
SM85-595-595-292-WMedium efficiency filter 85% 595X595X292mm wooden frame, aluminum separators595 × 595 × 292 mm
SM65-610-610-290-GAMedium efficiency filter 65% 610X610X290mm galvanized frame, aluminum separators, box type610 × 610 × 290 mm
SH95-610-610-292Aluminum separator type HEPA 95% 610X610X292mm610 × 610 × 292 mm
SM95-305-610-292-900CFMMedium efficiency filter 95% 305X610X292mm galvanized frame, aluminum separators 900CFM305 × 610 × 292 mm

Common sizes are listed above. Other sizes, frame materials and efficiency grades can be made to order — please quote the model or size when requesting a quotation.

Detailed Description

A medium-efficiency separator filter is a rigid, box-type medium filter with aluminum separators: glass-fiber media is pleated deeply, an aluminum separator sits between every two pleats to hold the media open, and the whole pack is fitted in a box frame. It is usually installed in the medium-efficiency stage of an air handling unit, or as the stage before a HEPA filter. Efficiency comes in three grades — 65%, 85% and 95%; depth is mainly 290/292 mm, also 150 mm, with a few at 75 or 95 mm. It is different from a bag filter: a bag filter is soft media sewn into pockets that hang down when the fan stops, whereas a separator filter is rigid and keeps its shape. In English a bag filter is often called a "pocket filter", so when asking for a quote, please make clear whether you mean a separator type or a bag (pocket) type.

How much air do the 150 mm and 290 mm depths handle?

The deeper the filter, the more media is folded in and the more air it can pass at the same pressure drop. For a 610×610 mm, 95% filter, both at about 132 Pa initial pressure drop, the 150 mm depth is rated at 17 CMM and the 290 mm depth at 31 CMM — about 1.8 times as much.

610×610 opening, 95%: depth and airflow

Rated airflow (model ratings)

02040Rated airflow (CMM)150 mm standard17 CMMabout 132 Pa290 mm standard31 CMMabout 132 Pa290 mm high capacity56.6 CMMPressure drop per selection

The 150 mm and 290 mm standard versions both start at about 132 Pa (13.5 mmH₂O); the high-capacity version is 2000 CFM ≈ 56.6 CMM.

SizeEfficiencyRated airflowInitial pressure drop
610×610×150 mm95%17 CMMAbout 132 Pa
610×610×290 mm95%31 CMMAbout 132 Pa
455×465×290 mm95%1200 m³/h135 Pa
305×305×150 mm65%500 m³/h65 Pa
Initial pressure drop was originally given in mmH₂O: 13.5 mmH₂O ≈ 132 Pa. The same 610×610×290 mm, 95% size also comes in a high-capacity version rated at 2000 CFM (about 56.6 CMM), with more media in the same frame; pressure drop for the high-capacity version is provided per selection.

Frames and frame styles

- Frame material: galvanized steel, aluminum, wood or stainless steel - Frame style: box, single header (a flange around the outlet face) or double recessed — it must match the holding frame on site - Gasket: usually on the outlet face - For hot environments there are 150–300°C stainless-frame versions

Specifications

- Efficiency: 65%, 85%, 95% - Depth: mainly 290/292 mm, also 150 mm - Media: glass fiber with aluminum separators - Dust-holding capacity and final pressure drop: provided per selection An example from an actual shipment: 595×595×292 mm, 95%, galvanized single-header frame. The 95% grade is sometimes called "HEPA 95%", but HEPA normally means 99.97% or higher at 0.3 μm, and 95% sits between medium efficiency and sub-HEPA; for a true HEPA filter, see the HEPA aluminum-separator filter.
Is a separator filter the same as a bag (pocket) filter?

No. A bag filter is soft media sewn into pockets that only open out when air flows; a separator filter has a rigid box frame, with the media held open by aluminum separators so it keeps its shape. In English a bag filter is often called a pocket filter, so please make clear in your inquiry whether you mean a separator type or a bag (pocket) type — a photo of the old filter helps.

How do I choose between 150 mm and 290 mm depth?

First check how deep the frame on site allows. If it takes 290 mm, the same pressure drop passes more air: for a 610×610, 95% filter, both at about 132 Pa initial pressure drop, 150 mm is rated at 17 CMM and 290 mm at 31 CMM — about 1.8 times. If the frame only takes a shallow filter, use 150 mm.

Why are some filters of the same size rated 31 CMM and others 2000 CFM?

Because there are standard and high-capacity versions. For the same 610×610×290 mm, 95% filter, the standard version is rated at 31 CMM (about 132 Pa), while the high-capacity version puts more media in the same frame and is rated at 2000 CFM (about 56.6 CMM), with pressure drop provided per selection. When replacing, check which version you had, or the airflow or pressure drop will not match the design.

The frame is described as "box", "single header" or "double recessed". How do I match my old filter?

These describe the cross-section of the frame, which must match how the filter locks into the holding frame on site. The most reliable way is to measure the old filter frame width × height × depth and send us photos of the front, the side and the frame edge; we will make the same frame style.

Selection References

Before ordering, verify the efficiency grade, media type, and whether the operating environment fits your requirements.