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

⚡25W max output power

🎯4 Ohm impedance for optimal compatibility

🔊3" full-range driver

Rp698427

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔊 Elevate your sound game with compact clarity and power!

COMPACT POWERHOUSE - 3-inch driver size packs punch in a sleek, space-saving design
SEAMLESS INTEGRATION - 4 Ohm impedance ensures smooth compatibility with most home theater and car audio systems
VERSATILE CONNECTIVITY - Supports Bluetooth and auxiliary inputs for effortless device pairing
DURABLE BUILD TRUSTED BRAND - Economical ferrite magnet and quality GRS construction backed by a 1-year warranty
CRYSTAL CLEAR AUDIO PRECISION - Coated paper cone with foam surround delivers rich, distortion-free sound

The GRS 3FR-4 is a 3-inch full-range speaker driver featuring a coated paper cone and foam surround for clear, immersive audio. With a 4 Ohm impedance and 25W max power output, it fits perfectly in home theater and car audio setups. Built with an economical ferrite magnet and quality GRS construction, it offers reliable performance backed by a 1-year warranty. Compatible with Bluetooth and auxiliary inputs, this driver is a versatile upgrade for audiophiles seeking crisp surround sound in a compact form.

Specifications

ASIN	B00K2ESJZ2
Additional Features	Subwoofer
Antenna Location	Home Theater,Construction
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#31,907 in Electronics ( See Top 100 in Electronics ) #230 in Car Coaxial Speakers
Brand	GRS
Built-In Media	1 x Speaker
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 (582)
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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