SKU: 79503197972

Polyplanar Mb-21 White 8-watt 2 1/2"" Vhf Remote Speaker

$13.49 $14.99
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Polyplanar Mb-21 White 8-watt 2 1/2"" Vhf Remote SpeakerPoly Planar MB21 8W VHF Extension Speakers Surface Mount White Model: MB21 Completely waterproof and corrosion proof Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and teflon coated wires Ideal for use as a VHF remote This compact marine communications speaker includes a stainless steel mounting bracket and stainless steel grill. 8 watts Maximum handling power. Comes equipped with a 10 lead wire and mini plug.

Poly-Planar MB21 8W VHF Extension Speakers Surface Mount - White

Model: MB21
  • Completely waterproof and corrosion-proof
  • Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and teflon-coated wires
  • Ideal for use as a VHF remote

This compact marine communications speaker includes a stainless steel mounting bracket and stainless steel grill. 8 watts Maximum handling power. Comes equipped with a 10’ lead wire and mini-plug. These waterproof communication speakers can be mounted where you can hear your VHF radiotelephone.

Specifications
Peak Power Handling 8 watts
Speaker Impedance 4 ohm
Frequency Range 1K to 10K Hz
Overall Dimensions 2 15/16? x 2 3/4? x 1 5/16? (74mm x 69mm x 33mm)

What's in the Box:
  • MB21 Speaker with 10' lead - White
  • Mounting bracket and Knobs
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79503197972

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4.6 ★★★★★
Based on 20 reviews
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Product Reviews
R
Verified Purchase
Reader's Edyn
Chelsea, US
★★★★★ 5
Awesome Vent Mount That Actually Stays Put
Color: Black
These vent clips are awesome. Setup was fast and easy, and it holds the phone very securely without bouncing around while driving. I also like that it has a 360° adjustment so you can get the angle right, and it doesn’t block the airflow like a lot of other vent mounts. Overall, it works great and does exactly what it’s supposed to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
J
Verified Purchase
Javagirle
Omaha, US
★★★★★ 4
Great attachment and sturdy
Color: Black
This item is great! The mount to the vent is secure. The only issue I have is when I want to move the arm to a different position, you have to unscrew the mount, and sometimes it comes undone and I have to attach to the vent again once I get it in the correct position. It could be because of my narrow vent though. It also jiggles a little on bumpy roads, but that is to be expected with something that extends so far. I like that the part that holds the phone doesn't cover the camera, so I can actually take a photo of the road with it. I would definitely recommend and/or buy this again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
K
Verified Purchase
Ks
Lowell, US
★★★★★ 5
Excellent product
Color: Black
Works great. Easy to assemble, phone is secured firmly, doesn't block vent. It is as described.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
R
Verified Purchase
RSinIDAHO
Draper, US
★★★★★ 5
Buy it! You won't regret it!
Color: Black
I was unsure of this holder since I live in the mountains, and drive on rough roads daily. This is by far the best phone holder I have used! It self adjusts on the bumpy roads, but thats expected. On city roads, it works perfectly! My phone is on the larger side, and it holds its weight just fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
C
Verified Purchase
CODY LOVE
San Leandro, US
★★★★★ 3
Air vent is not blocked
Color: Black
It doesn’t hold the phone tightly I had to change the part where u put the phone other than that it does not block the air vent
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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