does this fit a 4.5 x 10" filter? If so why is it not stated on the product as most of your customers would rather use a larger filter & replace less

It takes a 2.5x10 to be replaced every 6 months.

As I understand it the Post-Filter in the whole house diagram is a 5 micron filtration?

you can get different filter cartridges to fit this filter holder. cartridges sold separately

Does anyone know who sells the mounting brackets that fit this PRE system?

Check on Amazon or Home Depot but it's hard to find without the housing..

Can this be use as the pre-filter and the post filter? Also can this all be mounted outside?

Sure why not. Your question doesn’t say anything about pre and post what. I would venture to guess that you have some other kind of water treatment equipment between the two so maybe you would put different filter media in the post filter to further improve water quality. There are many kinds of filters you might use inside the canister .

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AO-WH-PRE

Product ID: 170412283

Details

Brand
A. O. Smith
Capacity
200 gallons
Included Components
Filter housing
Installation Type
Whole House
Material
Polypropylene
Package Information
Housing

💧7 GPM max flow rate

🔧DIY install w/ included wrench

🛡️NSF Certified sediment reduction

€ 116.36

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Description

💧 Elevate your home water game—sediment-free living starts here!

CUSTOMIZABLE FILTRATION - Works solo or pairs seamlessly with other A.O. Smith systems to tailor your water quality.
EFFORTLESS FILTER SWAPS - Built-in pressure relief button makes filter changes a breeze—no plumber needed.
SEDIMENT FREE EVERY TAP - Certified to reduce dirt, rust & sediment for pristine water throughout your home.
COMPACT DURABLE DESIGN - Polypropylene housing with 7 GPM flow supports whole house needs without bulky installation.
TRUSTED NSF CERTIFICATION - Backed by NSF Standard 42 for reliable particulate removal you can count on.

The A.O. Smith Whole House Sediment Pre-Filter Housing (AO-WH-PRE) is a compact, NSF-certified filtration system designed to reduce sediment, dirt, and rust from your entire home's water supply. Featuring a 7 gallons per minute max flow rate and easy DIY installation with included wrench and pressure relief button, it supports universal 2.5-inch cartridges (sold separately) and can be used alone or combined with other A.O. Smith filters. Built from durable polypropylene, it operates efficiently within 25-100 psi and temperatures from 40°F to 100°F, ensuring cleaner water and longer appliance life with minimal hassle.

Specifications

ASIN	B07R7BP5Y5
Best Sellers Rank	#20,777 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #13 in Whole House Water Treatment Systems #4,865 in Kitchen & Bath Fixtures
Brand	A. O. Smith
Brand Name	A. O. Smith
Capacity	200 gallons
Container Type	Housing
Customer Reviews	4.3 out of 5 stars 1,971 Reviews
Filter Life Cycle	6 months
Included Components	Filter housing, housing wrench (filters sold separately)
Installation Type	Whole House
Item Dimensions L x W x H	12.8"L x 5.39"W x 5.2"H
Item Highlight	NSF Certified \| Protects Appliances, Reduces Sediment \| Whole Home Filtration \| 3/4" Inlet/Outlet \| 1-Year Warranty
LowerTemperature Range	40 °F
Manufacturer	AO Smith
Material	Polypropylene
Material Type	Polypropylene
Maximum Flow Rate	7 gpm
Model Name	AO-WH-PRE
Model Number	AO-WH-PRE
Number of Packs	1
Operating Pressure Range	25-100 psi
Other Special Features of the Product	Sediment Reduction
Part Number	AO-WH-PRE
Power Source	Manual Operation
Product Dimensions	12.8"L x 5.39"W x 5.2"H
Purification Method	Mechanical Filtration, Sedimentation
Special Feature	Sediment Reduction
Supported Water TDS Level Maximum (PPM)	300
Upper Temperature Rating	100 °F
Warranty Description	1-Year Limited Warranty

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€ 116.36

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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