The current bulb that came with the fixture is a Hanstar FCL-22W Daylight, is this the correct replacement bulb?

Yes, Tommy, that's the correct replacement bulb. The only difference is your original FCL-22W is a Daylight bulb, and the Philips 391169 is Cool White Plus bulb. It will work, but there will be a slight difference in the color of the two bulbs, the Philips 391169 being 'Daylight' and the Hanstar FCL-22W being 'Cool White'.

My bulb says fc8 t9/kb, is this the correct replacement?

kB means kitchen and bath, so a different color temperature. But it will plug and play.

how do I test it on the work bench

An interesting question. Unless you have a transformer that produces the correct voltage and amperage, you can’t. However generally speaking, the rate of defective fluorescent bulbs from the factory is very, very low. If your old bulb stopped working and the new one doesn’t either, I would suggest buying a new ballast. They’re cheap and easy to replace and are likely to solve your problem.

DO I measure the inches on the outside or inside of the bulb?

The measurements are not a big issue with circular bulbs. Always go by the item number on bulb & 100% of the time it will be the bulb you want. The measurements are not accurate whether inside or outside, they will vary!!

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Philips 391169 Circline Fluorescent 22-Watt 8-Inch T9 Cool White Light Bulb

Product ID: 8877681

Details

Brand
Philips
Bulb Shape Size
T
Light Type
Fluorescent
Special Feature
Energy
Wattage
22 watts

💡22W energy-efficient power

🔄360° omnidirectional beam

♻️Low-mercury eco-friendly tech

R1129

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Description

💼 Illuminate your grind with eco-smart brilliance!

SEAMLESS 360 GLOW - Uniform light distribution eliminates shadows, perfect for garages, basements, and workshops.
WORK MODE BRIGHTNESS - Cool white 4100K light sharpens focus and productivity in any workspace.
PLUG PLAY SIMPLICITY - Standard bi-pin T9 base fits effortlessly into ceiling fixtures for instant upgrade.
ECO CONSCIOUS INNOVATION - Industry-leading low mercury levels with recycled materials for guilt-free illumination.
LONG LASTING PERFORMANCE - Up to 12,000 hours of reliable lighting—less hassle, more hustle.

The Philips 391169 Circline Fluorescent 22-Watt T9 Cool White Light Bulb delivers 1050 lumens of crisp, cool white light (4100K) ideal for workspaces like garages and workshops. Featuring advanced low-mercury technology and recycled materials, it balances high performance with environmental responsibility. Its 360-degree beam and 12,000-hour lifespan ensure consistent, shadow-free illumination, while the standard bi-pin base guarantees easy installation in ceiling fixtures.

Specifications

ASIN	B000FNFOKS
Additional Features	Energy Efficient
Beam Angle	360 degrees
Best Sellers Rank	#209,947 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,108 in Fluorescent Tubes
Brand	PHILIPS
Brand Name	PHILIPS
Bulb Shape Size	T
Color	Cool White
Color Rendering Index	62
Color Temperature	100 Kelvin
Connectivity Technology	Normal bulb
Control Method	App
Controller Type	Push Button
Customer Reviews	4.2 out of 5 stars 404 Reviews
Global Trade Identification Number	00046677391164
Incandescent Equivalent Wattage	60 watts
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	8"W x 1.03"H
Item Weight	1.6 ounces
Light Color	Cool White
Light Source Operating Life	12000 hours
Light Source Type	Fluorescent
Light Source Wattage	22 watts
Light Type	Fluorescent
Manufacturer	Philips Lighting
Manufacturer Part Number	046677391164
Material Type	Glass
Model Name	Circline FC8T9/COOL WHITE PLUS
Model Number	391169
Number of Items	1
Package Quantity	1
Power Consumption	22 watts
Shape	T9
Special Feature	Energy Efficient
Specific Uses For Product	Lamp
Specification Met	Cool White (4100 K)
UPC	046677391164 885630792965 046677254490
Unit Count	1 Count
Voltage	120 volts
Wattage	22 watts
White Brightness	1050 lumens

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R1129

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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