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Ducted Filter Modules

Ducted Filter Modules

HEPA/ULPA WhisperFlow Modules include 12"-dia. flange
for ducting to remote air handler
Optional Challenge Port
simplifies leak testing
  • Low-profile design allows installation inside cleanrooms with standard 2’ x 4’ ceiling grids
  • Both HEPA or ULPA filter options available
  • 12" x 2"H collar included for attachment to air source
  • WhisperFlow™ fan/filter unit provides uniform face velocity
  • Room-Side Replaceable models allow easy filter replacement without breaching the ceiling
  • Provides years of no-maintenance, 24/7 operation depending on your air quality

Ducted Filter Modules provide HEPA or ULPA filtered air when connected to an air handler or other air source (required). They include a 12" x 2"H collar for attachment to the air source, which determines flow rate. An internal baffling system and diffuser plate ensure uniform face velocity.

Filters are mounted within the white powder-coated steel housing. Room-Side Replaceable models allow faster, cleaner filter replacement. A remote damper adjustment option is also available.

HEPA filters are rated 99.99% efficient at removing particles ≥ 0.3 microns; ULPA filters are rated 99.999% efficient at removing particles ≥ 0.12 microns.

A number of adjustable damper options are available; call to discuss your requirements.
All-Stainless Steel HEPA/ULPA Filters for Clean Operation and Enhanced Chemical Compatibility
All models below include a 304 stainless steel fan housing with HEPA or ULPA filter mounted in an anodized aluminum frame and an anodized aluminum filter face grille.		   For clean and sterile operations, an all-stainless steel filter is available, which includes 304 SS filter frame and face grille that stand up to alcohol and other cleaning agents. Ask your Terra sales representative for a quotation with current lead time on all-stainless steel models.
Ducted Filter Modules—Powder-Coated Steel
Nominal
W x D		 Standard Model Room-Side Replaceable
With HEPA Filter With ULPA Filter With HEPA Filter With ULPA Filter
Cat. # Price Cat. # Price Cat. # Price Cat. # Price
2' x 4' 6601-24-HD $ 363 6601-24-UD $ 495 6601-24-HDR $ 707 6601-24-UDR $ 811
2' x 3' 6601-23-HD $ 363 6601-23-UD $ 495 6601-23-HDR $ 707 6601-23-UDR $ 811
2' x 2' 6601-22-HD $ 363 6601-22-UD $ 495 6601-22-HDR $ 707 6601-22-UDR $ 811
Ducted Filter Modules—304 Stainless Steel
Nominal
W x D		 Standard Model Room-Side Replaceable
  HEPA Filter ULPA Filter HEPA Filter ULPA Filter
  Cat. # Price Cat. # Price Cat. # Price Cat. # Price
2' x 4' 6601-24-HDSS $ 534 6601-24-UDSS $ 688 6601-24-HDRSS $ 1,012 6601-24-UDRSS $ 1,152
2' x 3' 6601-23-HDSS $ 534 6601-23-UDSS $ 688 6601-23-HDRSS $ 1,012 6601-23-UDRSS $ 1,152
2' x 2' 6601-22-HDSS $ 534 6601-22-UDSS $ 688 6601-22-HDRSS $ 1,012 6601-22-UDRSS $ 1,152
Terra FFU Replacement Filters
Type Filter Size /
Feet (mm)		 Aluminum Frame
with Andodized Aluminum
Face Grille		 304 Stainless Steel
with SS Face Grille
Cat. # Price Cat. # Price
HEPA 2 x 2 (610 x 610)
 6601-27 $ 299 6601-27-S $ 460
2 x 3 (610 x 914)
 6601-26 $ 356 6601-26-S $ 557
2 x 4 (610 x 1219)
 6601-25 $ 358 6601-25-S $ 552
ULPA 2 x 2 (610 x 610)
 6601-30 $ 308 6601-30-S $ 640
2 x 3 (610 x 914)
 6601-29 $ 366 6601-29-S $ 770
2 x 4 (610 x 1219)
 6601-28 $ 408 6601-28-S $ 834
Terra FFU Replacement Filters
Type Filter Size / Feet (mm) Aluminum Frame
 304 Stainless Steel Frame
Cat. # Price Cat. # Price
HEPA 2 x 2 (610 x 610)
 6601-27-R $ 437 6601-27-RS Call TUI
2 x 3 (610 x 914)
 6601-26-R $ 483 6601-26-RS $ 640
2 x 4 (610 x 1219)
 6601-25-R $ 510 6601-25-RS $ 672
ULPA 2 x 2 (610 x 610)
 6601-30-R $ 446 6601-30-RS $ 591
2 x 3 (610 x 914)
 6601-29-R $ 518 6601-29-RS $ 686
2 x 4 (610 x 1219)
 6601-28-R $ 547 6601-28-RS $ 724
Ceiling-Module Mounting Frame
Stainless steel mounting frames allow ceiling modules to be installed in drywall or other hard ceilings without a ceiling grid.* The frames are sized to hold 2' x 4' fan/filter units or light panels, or 2' x 3' and 2' x 2' fan/filter.

Frames "cradle" the modules, and sit securely in the ceiling cut-out with support from top flange. Continuous seams in the 304 stainless steel frames' corners reduce deposit of contaminating particles and simplify cleaning. 		FFU Mounting Frame
FFU Mounting Frame FFU Mounting Frame
Shown with Fan/Filter Unit installed, viewed from above ceiling panel. Ceiling module mounting frame:
2' x 4' shown, holding fan/filter
unit or light panel.
Description Cat. # Price
Mounting Frame: 2' x 4' 6604-02 $ 256
Mounting Frame: 2' x 3' 6604-01 $ 249
Mounting Frame: 2' x 2' 6604-00 $ 242
* Intended for use with supported ceilings that can safely bear the weight of fan/filter unit or light being installed. Mounting frame provides no support beyond the perimeter of the ceiling cut-out.
File Type File Name Publication Date
Manual (PDF) Ducted Filter Modules: Doc. # 1788-24
This document contains general specifications and installation/maintenance instructions for the standard Ducted Filter Module.		 10/02/2017
Manual (PDF) Room-Side Replaceable Ducted Filter Modules: Doc. # 1788-23
This document contains general specifications and installation/maintenance instructions for Room-Side Replaceable Ducted Filter Modules.		 10/02/2017
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