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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A. O. Smith Whole House Sediment Pre-Filter Housing | AO-WH-PRE | NSF Certified | Protects Appliances, Reduces Sediment | Whole Home Filtration | 3/4" Inlet/Outlet | 1-Year Warranty

A. O. Smith Whole House Sediment Pre-Filter Housing | AO-WH-PRE | NSF Certified | Protects Appliances, Reduces Sediment | Whole Home Filtration | 3/4" Inlet/Outlet | 1-Year Warranty

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 with included wrench

🛡️NSF Certified sediment reduction

R1618

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Description

💧 Elevate your home water game—because clean water is the new luxury.

ROBUST RELIABLE - Durable polypropylene housing supports up to 7 gallons per minute with a 1-year warranty for peace of mind.
CUSTOMIZABLE FILTRATION - Works solo or pairs seamlessly with other A.O. Smith systems to tailor your home’s water quality.
EFFORTLESS FILTER SWAPS - Built-in pressure relief button makes filter changes quick and hassle-free—no plumber needed.
SEDIMENT FREE EVERY TAP - NSF Certified to reduce dirt, rust & sediment for pristine water throughout your home.
PLUG PLAY INSTALLATION - Comes with a housing wrench for simple DIY setup—upgrade your whole house filtration in minutes.

The A.O. Smith Whole House Sediment Pre-Filter Housing (AO-WH-PRE) is an NSF Certified filtration system designed to reduce sediment, dirt, and rust from your entire home’s water supply. Featuring a 3/4" inlet/outlet and a maximum flow rate of 7 GPM, it ensures sediment-free water at every tap. The system includes a built-in pressure relief button for easy filter replacement and comes with a housing wrench for straightforward DIY installation. Compatible with universal 2.5-inch cartridges (sold separately), it offers flexible use either standalone or combined with other A.O. Smith filtration units. Backed by a 1-year warranty, this durable polypropylene housing supports water temperatures from 40°F to 100°F and operating pressures between 25-100 psi.

Specifications

ASIN	B07R7BP5Y5
Best Sellers Rank	#19,244 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Whole House Water Treatment Systems #5,835 in Kitchen & Bath Fixtures
Brand Name	A. O. Smith
Capacity	200 gallons
Container Type	Housing
Customer Reviews	4.3 4.3 out of 5 stars (1,950)
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
LowerTemperature Range	40 °F
Manufacturer	AO Smith
Material Type	Polypropylene
Maximum Flow Rate	7 gpm
Model Name	AO-WH-PRE
Model Number	AO-WH-PRE
Number of Items	1
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
Purification Method	Mechanical Filtration, Sedimentation
Supported Water TDS Level Maximum (PPM)	300
Unit Count	1 Count
Upper Temperature Rating	100 °F
Warranty Description	1-Year Limited Warranty

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R1618

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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