Is the price per speaker or for pair?

This is the price for the pair shown above

What size is mounting holes

Hello, The MR52B is the industry standard 5.25" speaker with the appropriate mounting holes. Thank you!

Are these waterproof?

Hello, The MR52B are not waterproof, they are weatherproof or water resistant, they can withstand the penetration of water to some degree but not entirely. Thank you!

ASIN	B01FC3SAEM
Antenna Location	For Music Players
Audio Driver Size	5.25 Inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#61,633 in Electronics ( See Top 100 in Electronics ) #82 in Marine Speakers
Brand	BOSS Audio Systems
Built-In Media	speakers
Color	BLACK
Compatible Devices	Smartphone, MP3 Player, Desktop, Laptop
Compatible with Vehicle Type	Boat
Connectivity Protocol	Coaxial, RCA, 3.5mm aux
Connectivity Technology	Coaxial
Control Method	Voice
Customer Package Type	FFP
Customer Reviews	4.2 out of 5 stars 162 Reviews
Enclosure Material	Plastic
Frequency Response	20 KHz
Global Trade Identification Number	00791489124423
Impedance	4 Ohms
Is Waterproof	TRUE
Item Dimensions D x W x H	6.25"D x 3.25"W x 6.25"H
Item Height	1.25 inches
Item Type Name	Speakers
Item Weight	2.4 Pounds
MP3 player	No
Manufacturer	BOSS Audio Systems
Model Name	MR52B
Model Number	MR52B
Mounting Type	Flush Mount
Number of Audio Channels	2.0
Number of Items	1
Power Source	manual
Speaker Maximum Output Power	150 Watts
Speaker Size	5.25 Inches
Speaker Type	Outdoor
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	5.25 Inches
Tweeter Diameter	1 Inches
UPC	791489124423
Unit Count	1.0 Count
Warranty Description	BOSS Audio Systems provides a powerful 3-year platinum online dealer warranty so long as the purchase is made through Amazon.
Warranty Type	third-party warranty
Water Resistance Level	Water Resistant
Woofer Diameter	5.25 Inches

Boss Audio 5.25 in. 2-Way Full-Range Marine Speakers in Black

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