FLEX STACK PACK FX5231-Z 2.5-Gallon Wet/Dry Vacuum

FLEX STACK PACK FX5231-Z is a cordless 2.5-gallon wet/dry vacuum listed as a tool-only model. Its HEPA filter, push-button manual filter cleaning and claimed airflow and water-lift figures suit portable cleanup, but batteries and chargers are sold separately.

At a glance

Cordless wet/dry cleanup in a 2.5-gallon format, with the listing recommending it for garage use and all floors.
Manufacturer claims up to 63 CFM and 82 inches of water lift. These are listing specifications, not independently verified measurements.
Push-button manual filter cleaning is intended to clear debris buildup from the filter.
A compatible wireless remote is optional and sold separately.

Price

$184.99Save 20%

Reference price: ~~$229.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

HEPA filtration is specified, with a manufacturer claim of filtering 99.97% of particles .03 microns or larger.
Manual filter cleaning offers a built-in way to clear filter debris without presenting it as automatic cleaning.
The compact listed capacity and handheld form may suit portable spot cleanup and garage tasks.

Cons

The tool-only configuration means batteries and a charger are sold separately, adding required purchases for buyers without compatible power equipment.

Technical specifications

18 specifications

Identity
Brand	FLEX
Model	FLEX STACK PACK 2.5 Gallon Wet/Dry Vacuum, Tool Only - FX5231-Z

Capacity and filtration
Capacity	2.5 gallons
Filter type	HEPA Filter
Filter claim	Filters 99.97% of particles .03 microns or larger

Power and performance
Power configuration	Battery Powered
Voltage	24
Airflow	UP TO 63 CFM
Water lift	82 IN. WATER LIFT

Dimensions and installation
Form factor	Handheld
Weight listed	10.6 pounds
Dimensions	16.38"L x 11.97"W x 11.5"H

Use and controls
Surface recommendation	All floors
Recommended use	Garage
Indoor/outdoor use	Indoor, Outdoor
Wireless remote compatibility	Compatible with hose- or tool-mountable wireless remote (FT523, sold separately)

Included components listed
Components	(1) Anti-Static Hose, HEPA Filter

Warranty
Manufacturer warranty description	5 yr warranty on material and workmanship.

What to know before buying

Listing details to confirm

The description also mentions a flexible hose, dust bag, shoulder strap, nozzles and attachments, while the explicit included-components field lists only an anti-static hose and HEPA filter. Confirm the selected listing's package contents. The title says tool only, and the description says batteries and chargers are sold separately.

What’s in the box

Included

Anti-static hose
HEPA filter

Who is it for?

A good fit for

FLEX battery-system owners who want a cordless wet/dry vacuum for garage or portable cleanup and can supply a compatible battery and charger.
Buyers who value listed HEPA filtration and the ability to manually clear filter buildup.

Less suited to

Buyers who need a complete ready-to-run kit with battery and charger included.
Those who need a larger-capacity vacuum than the listed 2.5 gallons.

FLEX STACK PACK FX5231-Z 2.5-Gallon Wet/Dry Vacuum · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.9 / 5 · 7 ratings

5 stars87%87%
4 stars13%13%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no written customer-feedback summary. The ratings lean strongly toward the top two star categories, but the small sample does not establish particular strengths, concerns or performance reasons. Consider them limited context alongside the listed 2.5-gallon capacity and tool-only configuration.

Frequently asked questions

Does the FX5231-Z include a battery and charger?

The title identifies it as tool only, and the description says batteries and chargers are sold separately.

What filtration does this vacuum list?

It lists a HEPA filter and claims filtration of 99.97% of particles .03 microns or larger.

Is a wireless remote included?

No. The listing describes compatibility with the FT523 remote, which is sold separately.

What accessories are included?

The explicit included-components field names an anti-static hose and HEPA filter. The description lists additional items, so confirm the selected package contents.