Northeast Controls Inc.

Dürr Universal Silencers — Air Filtration

Filter Elements

W-2 · DD-2 · P-II Panel Elements · Cartridge Elements · Gas Turbine Elements

Panel Elements

W-2DD-2P-II

Cartridge Elements

CS/CCS/CF/CCF

Gas Turbine Elements

Pulse-JetStaticHigh-Efficiency

Dürr Universal Silencers supplies replacement filter elements for all of their panel filter, cartridge filter, and gas turbine inlet filter housing product lines. Elements are available in pleated cellulose, felted polyester, galvanized wire mesh, and high-efficiency synthetic and glass fiber media. Keeping replacement elements in stock minimizes downtime during scheduled filter changeouts.

Panel Filter Elements

FH · FSH · BFH · FRH Series Housings

Standard 20" × 25" × 2" panel filter elements for use in FH, FSH, BFH, and FRH series filter housings. Three media types are available — W-2 pleated cellulose, DD-2 felted polyester, and P-II galvanized wire mesh — to suit different service environments and filtration requirements.

W-2Pleated Cellulose Panel ElementPleated cellulose
Efficiency: Standard efficiencyApplication: General-purpose inlet air filtration for blowers and compressors
→Pleated cellulose media — high surface area
→Standard efficiency for general industrial service
→Fits FH, FSH, BFH, and FRH series housings
→Standard 20" × 25" × 2" panel size
→Economical replacement element
→Dry media — no oil required

Most common replacement element for blower and compressor inlet filter housings.

DD-2Felted Polyester Panel ElementFelted polyester
Efficiency: Higher efficiency than W-2Application: Blower and compressor inlet filtration in dusty or humid environments
→Felted polyester media — moisture resistant
→Higher efficiency than pleated cellulose W-2
→Suitable for humid and damp environments
→Fits FH, FSH, BFH, and FRH series housings
→Standard 20" × 25" × 2" panel size
→Longer service life in dusty conditions

Preferred over W-2 in humid climates or where moisture ingestion is a concern.

P-IIGalvanized Wire Mesh Panel ElementGalvanized wire mesh (washable)
Efficiency: Pre-filter / coarse filtrationApplication: Pre-filtration stage; washable and reusable
→Galvanized wire mesh — washable and reusable
→Coarse pre-filter for large particle removal
→Extends service life of downstream fine filter elements
→Fits FH, FSH, BFH, and FRH series housings
→Standard 20" × 25" × 2" panel size
→Reduces overall filter replacement cost

Used as a pre-filter upstream of W-2 or DD-2 elements to extend their service life.

Panel Filter Element Part Numbers

Standard panel filter elements, wire mesh, polyester felt, pleated paper, aluminum frame, stainless steel, and accessory items.

ModelPart No.SizeDescriptionWgt.
P-881-039820 x 25 x 8Absolute panel filter - 1st stage; glass29
P-8 pad81-040020 x 25 x 2Absolute panel filter - pre-filter pad1
P-12F81-042920 x 25 x 12Absolute panel filter - 2nd stage; glass44
W-2-5081-041012 x 12 x 2Panel element; galvanized wire mesh4
W-2-1081-016216 x 20 x 2Panel element; galvanized wire mesh8
W-2-2081-016316 x 25 x 2Panel element; galvanized wire mesh10
W-2-3081-016420 x 20 x 2Panel element; galvanized wire mesh10
W-2-4081-016520 x 25 x 2Panel element; galvanized wire mesh11
DD-2-5081-041112 x 12 x 2Panel element; polyester felt4
DD-2-1081-017016 x 20 x 2Panel element; polyester felt7
DD-2-2081-017116 x 25 x 2Panel element; polyester felt9
DD-2-3081-017220 x 20 x 2Panel element; polyester felt8
DD-2-4081-017320 x 25 x 2Panel element; polyester felt9
P-1181-032620 x 25 x 2Panel element; pleated paper8
P-581-03175 dia x 6.7 longCartridge element; pleated paper (48/case)—
P-5E81-04215 dia x 6.7 longCartridge element; epoxy coated paper (48/case)—
WAA2-4081-043520 x 25 x 2Aluminum frame and media—
DDAA2-3081-048620 x 20 x 2Aluminum frame and media—
DDAA2-4081-048320 x 25 x 2Aluminum frame and media—
WSS2-4081-046420 x 25 x 2304SS frame and 316SS screen cloth—
WSS2-4581-047824 x 24 x 2304SS frame and 316SS screen cloth—
DDSS2-1081-104516 x 20 x 2304SS frame and 316SS screen cloth—
DDSS2-2081-104616 x 25 x 2304SS frame and 316SS screen cloth—
DDSS2-3081-104720 x 20 x 2304SS frame and 316SS screen cloth—
DDSS2-4081-048120 x 25 x 2304SS frame and 316SS screen cloth—
DDGS2-4081-044120 x 25 x 2Galvanized frame, 304SS expanded metal, 316SS screen cloth—
P-5 adapter87-0266—P-5 cartridge filter adapter1
P-681-149720 x 25 x 6Panel element; pleated paper; hospital grade25
GP-2-4081-154320 x 25 x 2Pre-filter pad with frame4
—81-032313 oz.Oil free adhesive (6/case)6
—81-1234—Filter restriction gauge1
—81-1026—Magnehelic gauge1

Cartridge Filter Elements

CS · CCS · CF · CCF Series Housings

Round pleated cartridge filter elements for use in CS, CCS, CF, and CCF series cartridge filter-silencer housings. Available in ½" through 16" inlet sizes to match the housing connection size. Flow range 15 to 7,700 CFM.

Standard Cartridge ElementRound Cartridge Filter Element
Housing: CS, CCS, CF, CCF seriesSizes: ½" to 16" inlet connectionFlow: 15 to 7,700 CFM
→Pleated filter media — high surface area
→Round cartridge form factor
→Fits CS, CCS, CF, and CCF series housings
→Available in ½" through 16" inlet sizes
→Flow range 15 to 7,700 CFM
→Dry media construction

Standard replacement element for all CS, CCS, CF, and CCF series cartridge filter-silencers.

Cartridge Element Selection by Pipe Size

Select the correct element part number based on nominal pipe size and media type. Part numbers marked (old) are superseded — use the current number when available.

P (Nom.)PaperFeltWire Mesh
1/281-047081-120281-1035
3/481-047081-120281-1035
181-047081-120281-1035
1-1/481-047181-120381-1036
1-1/281-047181-120381-1036
281-047181-120381-1036
2-1/281-1063, 81-0472 (old)81-1205, 81-1204 (old)81-1038, 81-1037 (old)
381-1063, 81-0472 (old)81-1205, 81-1204 (old)81-1038, 81-1037 (old)
3-1/281-106381-120581-1038
481-106381-120581-1038
581-1063, 81-0474 (old)81-1205, 81-1206 (old)81-1038, 81-1039 (old)
681-047581-120781-1040
881-0475 (2)81-1207 (2)81-1040 (2), 81-1199 (old)
1081-116381-120981-1200
1281-116381-120981-1200
1481-116481-121081-1201
1681-116481-121081-1201

CCS / CS / CCF / CF Element Specifications & Service Instructions

Three types of filter elements are available for Dürr Universal's cartridge filters and filter-silencers. Pleated paper elements provide the highest efficiency and are considered standard. Pleated felt and wire mesh elements are available for less demanding service. All three types are completely interchangeable and will fit all CCS, CS, CF, or CCF filter housings.

Pleated Paper ElementStandard — Highest Efficiency
MediaHigh-quality industrial grade filter paper, pleated and oven-cured during production
End CapsOven-cured plastisol with molded sealing beads
Efficiency99% at 2 microns
Max Operating Temp185°F — all sizes (½" through 16")

Service Instructions

Because of the low cost of the paper element, it is generally treated as a consumable and replaced when dirty. The element may also be cleaned with compressed air and reused.

Compressed Air Cleaning (100 PSI maximum)

Direct compressed air through the dry element opposite the normal direction of flow. After cleaning, inspect carefully for holes or cracks — replace if damaged. See IOM 94-1341.

Pleated Felt ElementWashable — Reusable
MediaDurable polyester felt, pleated
End Caps (½"–8")Oven-cured plastisol with molded sealing beads
End Caps (10"–16")Metal end caps with closed-cell rubber gaskets
Efficiency98% at 10 microns
Max Operating Temp185°F — all sizes (½" through 18")

Service Instructions

Pleated felt elements may be cleaned using compressed air (same procedure as paper elements) or with water.

Water Cleaning Procedure

  1. Rap gently to loosen accumulated dirt.
  2. Soak approximately 15 minutes in warm water and mild detergent.
  3. Rinse thoroughly with low-pressure water.
  4. Air dry. Do not dry with compressed air.
  5. Inspect carefully for holes or cracks — replace if damaged.

See IOM 94-1341.

Wire Mesh ElementRoughing Filter — Reusable Indefinitely
MediaGalvanized corrugated wire mesh
Efficiency~93% at 10 microns (varies with adhesive/oil coverage)
NoteNot recommended where fine particle filtration is required
Max Temp (with adhesive)200°F — adhesive flash point 235°F
Max Temp (untreated)300°F

Service Instructions

New elements are supplied pretreated with Dürr Universal Oil-Free Adhesive. For best performance, retreat the element after each cleaning. Spray both sides with Dürr Universal Oil-Free Adhesive (Part No. 81-0323) following the instructions on the container. Alternatively, dip in SAE 30–50 motor oil and allow to drain thoroughly before use.

Cleaning Procedure

  1. Wash in solvent or warm water with detergent — use a container large enough to completely immerse the element.
  2. Rinse thoroughly and drain completely.
  3. Air dry or dry using compressed air.
  4. Retreat with oil-free adhesive (Part No. 81-0323) or oil before returning to service.

See IOM 94-1341.

Gas Turbine Filter Elements

Pulse-Jet · Static · Two-Stage Housings

Replacement filter elements for gas turbine inlet filter housings — pulse-jet self-cleaning cartridges, static panel and bag elements, and high-efficiency final-stage elements. Available for Solar, GE, Siemens, Westinghouse, ABB, and other major turbine OEM housings. Custom sizes available for retrofit applications.

Pulse-Jet CartridgePulse-Jet Self-Cleaning Cartridge ElementPulse-jet self-cleaning filter housings
→Designed for pulse-jet reverse-air cleaning systems
→High-efficiency pleated media
→Withstands repeated pulse-cleaning cycles
→Extended service life vs. static elements
→Available in standard and custom sizes
→MERV-rated media options available

Used in pulse-jet self-cleaning gas turbine inlet filter housings. Cleaned in-place by reverse air pulse — no shutdown required for cleaning.

Static Panel / BagStatic Panel and Bag Filter ElementsStatic and two-stage gas turbine filter housings
→Pre-filter panels (coarse) + final bag or cartridge (fine)
→Two-stage filtration for high-efficiency performance
→Synthetic and glass fiber media options
→MERV 8 through MERV 16 efficiency ratings
→Custom sizes for OEM and retrofit housings
→Available for Solar, GE, Siemens, Westinghouse, ABB turbines

Used in static and two-stage gas turbine inlet filter housings. Pre-filter panels are replaced more frequently; final elements are replaced on a longer interval.

High-Efficiency Final ElementHigh-Efficiency Final Filter ElementTwo-stage and integrated silencer-filter housings
→High-efficiency final stage element
→Glass fiber or synthetic media
→MERV 14 to MERV 16 efficiency
→Protects turbine compressor blades from fouling
→Reduces turbine maintenance intervals
→Custom sizes for all major turbine OEMs

Final-stage element in two-stage gas turbine filtration systems. Critical for protecting turbine compressor blades from salt, dust, and particulate fouling.

Filter Media Comparison

Media / ModelEfficiencyMoistureWashableBest For
Pleated Cellulose (W-2)StandardNot recommendedNoGeneral industrial blower/compressor inlet
Felted Polyester (DD-2)HigherSuitableNoHumid environments, dusty conditions
Galvanized Wire Mesh (P-II)Coarse pre-filterSuitableYesPre-filter stage; reusable
Pleated CartridgeStandard–HighDry serviceNoCS/CCS/CF/CCF cartridge housings
Pulse-Jet CartridgeHighDry servicePulse-cleanedGas turbine pulse-jet housings
Static Panel/BagMERV 8–16Dry serviceNoGas turbine static/two-stage housings
High-Efficiency FinalMERV 14–16Dry serviceNoGas turbine final-stage protection

2026 Standard Products — Filter Silencer Catalog Data

Dürr Universal Silencers Rev. 01 / 2026. Weights are approximate. Filter elements are non-returnable. Minimum order $200. Shipping point: Laredo, TX.

CCF Series — Cartridge Filter-Silencers (with Paper Element)

Intake filter-silencer with paper element. Threaded (TT) or flanged (AA) connections.

SizeP/NMM#DescriptionWeight (lbs)
1.5"34-L15-TTP1000001847CCF-1 1/2 FILTER W/PAPER9
2"34-L02-TTP1000001367CCF-2 FILTER W/PAPER7
2.5"34-L25-TTP1000001417CCF-2 1/2 INTAKE FILTER W/PAPER11
3"34-L03-TTP1000000907CCF-3 INTAKE FILTER W/PAPER10
3.5"34-L35-TTP1000001753CCF-3 1/2 FILTER W/PAPER13
4" (THD)34-L04-TTP1000000912CCF-4 INTAKE FILTER THD W/PAPER12
4" (FLG)34-L04-AAP1000000910CCF-4 INTAKE FILTER FLG W/PAPER14
5" (THD)34-L05-TTP1000000909CCF-5T INTAKE FILTER THD W/PAPER12
5" (FLG)34-L05-AAP1000001002CCF-5 INTAKE FILTER FLG W/PAPER16
6"34-L06-AAP1000001399CCF-6 INTAKE FILTER W/PAPER31
8"34-L08-AAP1000001335CCF-8 INTAKE FILTER W/PAPER43
10"34-L10-AAP1000001400CCF-10 INTAKE FILTER W/PAPER52
12"34-L12-AAP1000001336CCF-12 INTAKE FILTER W/PAPER64
14"34-L14-AAP1000001401CCF-14 INTAKE FILTER W/PAPER97

CCS Series — Cartridge Filter-Silencers (with Paper Element)

Intake filter-silencer with paper element. Threaded (TTP) or flanged (AAP) connections. Larger body than CCF for higher flow capacity.

SizeP/NMM#DescriptionWeight (lbs)
1.5"34K15TTP1000001749CCS-1 1/2 FILTER W/PAPER10
2"34K02TTP1000001396CCS-2 INTAKE FILTER W/PAPER8
2.5"34K25TTP1000001468CCS-2 1/2 FILTER W/PAPER19
3"34K03TTP1000001145CCS-3 INTAKE FILTER W/PAPER18
4" (THD)34K04TTP1000001151CCS-4T INTAKE FILTER THD W/PAPER19
4" (FLG)34K04AAP1000001148CCS-4 INTAKE FILTER FLG W/PAPER21
5" (THD)34K05TTP1000001157CCS 5T INTAKE FILTER THD W/PAPER19
5" (FLG)34K05AAP1000001154CCS-5 INTAKE FILTER FLG W/PAPER23
6"34K06AAP1000001397CCS-6 INTAKE FILTER W/PAPER43
8"34K08AAP1000001334CCS-8 INTAKE FILTER W/PAPER56
10"34K10AAP1000001398CCS-10 INTAKE FILTER W/PAPER83
12"34K12AAP1000001332CCS-12 INTAKE FILTER W/PAPER91
14"34K14AAP1000001394CCS-14 INTAKE FILTER W/PAPER143
16"34K16AAP1000001333CCS-16 INTAKE FILTER W/PAPER145

Replacement & Maintenance Guidance

Replacement intervalBased on pressure drop across element — replace when ΔP reaches manufacturer limit
Pressure drop indicatorMagnehelic gauge or differential pressure switch recommended on all housings
W-2 / DD-2 service lifeTypically 6–12 months in normal industrial service; shorter in high-dust environments
P-II mesh elementWash and re-oil per manufacturer instructions; inspect for damage before reinstalling
Cartridge elementsReplace when ΔP limit reached; do not attempt to clean pleated cartridge elements
Gas turbine elementsPulse-jet elements cleaned in-place; static elements replaced on scheduled interval or ΔP
Stocking recommendationKeep 1–2 sets of replacement elements on hand to minimize downtime during changeout

Ordering Replacement Elements

To order replacement filter elements, provide the housing model number (found on the housing nameplate), the element type (W-2, DD-2, P-II, or cartridge), and the quantity required. For gas turbine filter elements, provide the turbine OEM and model number. Contact Northeast Controls Inc. for pricing and availability.

Order Replacement Filter Elements

Northeast Controls Inc. supplies replacement filter elements for all Dürr Universal Silencers filter housing product lines. Contact us with your housing model number and element type for pricing and availability.

1-201-419-6111 · [email protected]

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