How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

1 6

Terra Universal 6601-23-U Fan Filter Unit 120V Open Box - Unused

$299.00 USD

Sale Sold out

✓ 30-day returns on every item — return policy

ConditionOpen Box - Unused MPN6601-23-U Stock #Stock # 0626-01729

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

Shipping Estimate

⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

✓ Free domestic UPS Ground shipping — applied automatically at checkout.

Same-Day Available
Real support team
Secure checkout

Product Specifications

Manufacturer: Terra Universal
MPN / Model: 6601-23-U
Product Type: WhisperFlow Fan Filter Unit (FFU), ULPA
Serial Number: 6601-23-U-P187641-26
Size: 2' x 3'
Filter: ULPA
Material: Powder-Coated Steel
Voltage: 120 V
Current: 3.8 A
Phase: 1 Ph
Frequency: 60 Hz
Motor Type: AC NMC
Date Code: 10Feb2022
Marks & Listings: cULus Listed, Air Filtering Appliance 45UV

Product Description

Terra Universal model 6601-23-U is a WhisperFlow ULPA fan filter unit (FFU) built on a 2' x 3' powder-coated steel housing, identified by serial number 6601-23-U-P187641-26 and a February 2022 build date. The nameplate lists a 120 V, 3.8 A, single-phase, 60 Hz AC NMC motor, and the unit carries cULus listing as an Air Filtering Appliance 45UV. It ships with the removable yellow 4-pin power cord shown.

This is the complete fan/filter unit, combining the blower module and ULPA filtration in one assembly used for cleanroom ceiling installations and laminar airflow applications. Buyers sourcing a Terra WhisperFlow FFU should match on the exact model 6601-23-U and the 120 V electrical rating to confirm fit against existing cleanroom power distribution. The included ULPA filter element is internally marked with Terra part number 6601-29 (factory PN Q7-23.62-35.62-4-03-T3-2D-00-0), rated 99.9995% at MPPS, 525 CFM nominal airflow.

View full details

Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.