my bulbs are 20 inches long, are these the same?

The tube is 20 and 1/4 inches long, but counting the pins on both ends it's a total of almost 21 inches. Check the full length of your fixture taking into account the extra amount for the pins.

are these bulbs made in china?

Yes, according to the box in which the are packed.

What is the difference between f17t8 and f13t5??

The length and the wattage of the bulbs are different.

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Description

💡 Illuminate smarter, last longer, and work brighter!

ENERGY SMART DESIGN - Only 13 watts for powerful illumination without the high energy bill
EFFORTLESS BRIGHTNESS - 4100K Cool White light for crisp, professional ambiance
INSTANT ON TECHNOLOGY - No warm-up delay—light up your workspace immediately
PLUG PLAY CONVENIENCE - G5 Mini Bi-Pin base ensures easy installation and compatibility
LONG LASTING RELIABILITY - 12,000 hours lifespan means fewer replacements and less hassle

This pack of two F13T5/CW 13-watt T5 fluorescent tubes delivers crisp 4100K cool white light with an impressive 12,000-hour lifespan. Featuring instant-on technology and a G5 mini bi-pin base, these energy-efficient bulbs provide 880 lumens of reliable indoor illumination, perfect for professional environments seeking sustainable and hassle-free lighting solutions.

Specifications

Brand	Unique Bulbs
Light Type	Fluorescent
Special Feature	Instant On
Wattage	13 watts
Bulb Shape Size	T8
Bulb Base	G5.3
Incandescent Equivalent Wattage	13 Watts
Specific Uses For Product	bulb
Light Color	white
Voltage	120
Unit Count	2.0 Count
Color Temperature	4100 Kelvin
Number of Items	2
Brightness	880 Lumen
Material	Glass
Model Name	F13T5
Indoor/Outdoor Usage	Indoor
Color Rendering Index	80
Power Consumption	13 Watts
Item Package Quantity	2
Light Source Type	Fluorescent
Item Weight	3.84 ounces
Light Source Wattage	13 Watts
Product Dimensions	2"W x 1"H
Bulb Diameter	2 Inches
Control Method	App
Manufacturer	Unique Bulbs
UPC	617395103621
Part Number	f13t5
Item model number	F13T5
Is Discontinued By Manufacturer	No
Color	White
Finish types	White
Included Components	Bulb
Special Features	Instant On
Batteries Included?	No
Batteries Required?	No
Wattage	13 Watts

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