What is the exact outside dimension of the speaker frame? I'd like to mount it in an enclosure which allows room for a 3 1/4 inch wide speaker.

The front mounting flange of this speaker is basically square, with the four sides of the square being slightly rounded outward. There are four mounting holes, one in each corner of the mounting flange. The distance across the diagonals of the flange (crossing two opposite corner mounting holes) is 3.75 inches. The distance across the widest middle section of the flange ( intersecting the center of speaker cone) is 3.165 inches. Measurements were taken with a dial caliper and are accurate to 1/1000th (0.001) of an inch. So, the speaker will just squeeze into your 3.25" mounting space with only 0.085 (about 3/32") of an inch to spare - assuming you are measuring the 3.25" across the width of a square speaker mounting space and not diagonally across the square space. BTW The depth is 1.7".

Does it comes in pairs or this is just a single speaker ?

It's a single speaker. If you'd like a pair, you'll have to order two. Worth the extra effort. Mine sounds great.

whats the wattage/rms of this speaker?

Thank you for contacting Parts Express. To follow are Product Specifications for the item. Nominal Diameter3"Power Handling (RMS)10 WattsPower Handling (max)20 WattsImpedance4 ohmsFrequency Response135 to 16,000 HzSensitivity81 dB 1W/1mVoice Coil Diameter0.75"I hope the information is helpful. Should you have any other questions, please let us know. Customer Service Team

How thick is this speaker

They are good speakers for 10 watts+10 watts in a sead box if this helps any

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GRS 3FR-4 Full Range 3" Speaker Driver 4 Ohm

Product ID: 11950166

Details

Audio Output Mode
Surround
Brand
GRS
Connectivity Technology
Auxiliary
Frequency Response
20000 hertz
Speaker Maximum Output Power
25 watts

⚡4 Ohm impedance for efficient power use

🔊3" full-range driver

🛠️Durable coated paper cone with foam surround

E£ 2845

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Description

🔊 Elevate your sound game with compact power and clarity!

COMPACT YET MIGHTY - 3-inch driver fits seamlessly into home theaters and car systems without compromise.
RELIABLE BUILD QUALITY - Economical ferrite magnet and quality GRS construction backed by a 1-year warranty.
VERSATILE COMPATIBILITY - Seamlessly integrates with laptops, smartphones, and car audio setups via Bluetooth and auxiliary.
EFFICIENT POWER HANDLING - 4 Ohm impedance ensures optimal energy use for powerful output.
CRYSTAL CLEAR AUDIO PRECISION - Coated paper cone and foam surround deliver crisp, distortion-free sound.

The GRS 3FR-4 is a 3-inch full-range speaker driver featuring a coated paper cone with foam surround for clear sound reproduction. With a 4 Ohm impedance and economical ferrite magnet assembly, it delivers efficient and reliable audio performance. Designed for versatile use in home theaters, cars, and personal devices, it supports Bluetooth and auxiliary connectivity. Built with quality GRS construction and backed by a 1-year warranty, this speaker driver offers a compact, durable solution for immersive surround sound experiences.

Specifications

ASIN	B00K2ESJZ2
Additional Features	Subwoofer
Antenna Location	Home Theater,Construction
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#37,622 in Electronics ( See Top 100 in Electronics ) #272 in Car Coaxial Speakers
Brand	GRS
Color	Black
Compatible Devices	Laptop, Personal Computer, Smartphone
Compatible with Vehicle Type	Car
Connectivity Protocol	Bluetooth
Connectivity Technology	Auxiliary
Control Method	Touch
Customer Package Type	FFP
Customer Reviews	4.3 4.3 out of 5 stars (583)
Enclosure Material	Foam, Paper, Metal
Frequency Response	20000 hertz
Impedance	4 ohm
Is Waterproof	FALSE
Item Dimensions D x W x H	3.2"D x 3.7"W x 2"H
Item Weight	11.2 ounces
Manufacturer	GRS
Maximum Range	15 meters
Model Name	1
Model Number	1
Mounting Type	Bar Mount
Number of Audio Channels	3
Number of Items	1
Power Source	Corded Electric
Speaker Maximum Output Power	25 watts
Speaker Size	3 inches
Speaker Type	Surround Sound
Specific Uses For Product	Construction, Home Theater
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	3 inches
UPC	848864015194
Unit Count	1 Count
Warranty Type	Limited
Wireless Technology	Bluetooth
Woofer Diameter	3 inches

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E£ 2845

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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