![Poly-Planar MB-21 8 Watt VHF Extension Speaker - Black [MB21B]](https://cdn.shopify.com/s/files/1/0855/3916/0358/files/11236XL.jpg?v=1706641633)
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Poly-Planar MB-21 8 Watt VHF Extension Speaker - Black [MB21B]MB 21 8 Watt VHF Extension Speaker Black This compact marine communications speaker includes a stainless steel mounting bracket and stainless steel grill. These waterproof communication speakers can be mounted where you can hear your VHF radio. Features: Completely waterproof and corrosion proof Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and Teflon coated wires 10' Lead wire w mini plug and RCA adapter
MB-21 8 Watt VHF Extension Speaker - Black
This compact marine communications speaker includes a stainless steel mounting bracket and stainless steel grill.
These waterproof communication speakers can be mounted where you can hear your VHF radio.
Features:
- Completely waterproof and corrosion-proof
- Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and Teflon-coated wires
- 10' Lead wire w/mini-plug and RCA adapter
Specifications:
- Peak Power Handling - 8 watts
- Continuous Power - 4 watts
- Speaker Impedance - 4 ohm
- Weight - 0.35 lbs per speaker
- Overall Dimensions - 2-15/16" x 2-3/4" x 1-5/16" (74mm x 69mm x 33mm)
*Sold as a Single
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.Specifications:
- Type: Speakers
- Box Dimensions: 2"H x 5"W x 8"L WT: 0.5 lbs
- UPC: 731128002118
Quick Guide (pdf)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 1770 reviews
Sort
Product Reviews
★★★★★ 3
Dog loved, started to break down after 10 minutes.
Color: Hedgehog, Color: Hedgehog
I don’t know why it’s so difficult to find a quality teething toy that won’t begin to break down within (in this case) the first 10 minutes. I have a 17lb, 5 mos old Bernedoodle and she’d broken two pieces off the snout in 10 minutes and tried eating them. Yeah, yeah, they’d most likely pass - but this shouldn’t happen with a product specifically sold as a dog chew toy and listed for teething. On the plus side, she loves it - but I can’t obsessively monitor her every second of her teething either. Hit with the dog, frustrating for the ‘parent’.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
Get this for your teething pup ASAP!!!
Color: Hedgehog
Immediately calmed my Bichon Frise puppy who is going through a tough teething & nipping phase ... None of the other teething toys were really engaging him, so as a result he would get restless and start biting at air, lol. This worked immediately at keeping him occupied and content. It also freezes great for him to cool his gums after a nap. Get this teether, you will not regreat it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 4
Good for Teething puppies
Color: Teething Stick
After getting my fingers chewed and bitten by my new foster - 8 week old Yorkie , I was desperate to find good teething toys. Fortunately this one arrived quickly. Turned out to be very good for teething puppies! Charlie loves this cooling stick. Once it’s frozen, the cold really seems to soothe his sore gums. The icy part doesn’t stay frozen for long, but it works so well that I bought a second one to keep ready in the freezer while he’s working on the first.
Even after it warmed up, he still enjoyed chewing on the soft stuffed part and the tentacles. The product card says not to use it as a chew toy, so supervision is a must, but it held up just fine so far.
Overall, this has been a big help during the teething phase — short-lived when frozen, but very effective while it lasts! And worth every penny to save my fingers from being a chew toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
★★★★★ 5
Happy hound!
Color: Yellow, Color: Yellow
My 2 yr old bloodhound destroys every toy in minutes, but not this one. My husband and I actually buy toys to see how long they last for fun. Although the croc is NOT indestructible, it lasts a whole lot longer than most. After an hr or so, I took away the only piece he's chewed off which is part of the back leg. Otherwise nothing else is missing off the croc. Our boy has been very occupied with this new toy and we're satisfied with his new distraction!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Definitely a tough toy
Color: Blue
This is one of the few toys my
Boxer/american bulldog mix hasn’t been able to tear apart. He loves chewing on it and I love that he doesn’t chew on stuff he shouldn’t.
I have such an issue with toys being torn apart the day I bring them home. I wish there was a safe way for it to have a squeaker since he loves squeakers but I don’t think that is possible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026