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JBL MTC-300BB12
JBL MTC-300BB12
JBL MTC-300BB12
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JBL MTC-300BB12

Marsoni M251S
Sale price$146.65
Pay 4 payments of $36.66 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
JBL MTC-300BB12Best in Class Three Cubic Foot Back Box for 12 Models. Rectangular with Extra Thick 16 Gauge Metal and Heavy Duty MDF Reinforcement on Top and Side Panels. Fits Control 321C, 321CT, 322C, 322CT & 321CS. 23. 1 x 18. 2 (20 Incl. Side Tabs) x 12. 8 Deep. NOW UL LISTED Sold and packed as Eaches
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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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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
4.9 ★★★★★
Based on 2004 reviews
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Product Reviews
B
Verified Purchase
Billy Ragsdale
Pawtucket, US
★★★★★ 5
These pillowcases are wonderful.
Color: Light Purple, Size: 2 Pack Queen(20x30)-Regular
I love my new pillowcases. They are cooling and easy to wash.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
L
Verified Purchase
Lane
Cuba, US
★★★★★ 5
Great price nice and soft material
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
Says it's a cooling pillow case and it fits my pillow perfect and yes it's cooling
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
S
Verified Purchase
Stephenochi
Chelsea, US
★★★★★ 5
Very cool pillow cover
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
Great value for the price! Body pillow is very comfortable and silky smooth. Has a very nice very color. Pillow case is not heavy at all! Would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
S
Verified Purchase
sylvia
Lowell, US
★★★★★ 5
Good pillow case
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
It’s a nice soft pillow case. Fits perfectly on my body pillow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
M
Verified Purchase
MJ
Houston, US
★★★★★ 4
Cooling and comfortable against your skin
Color: Navy Blue, Size: 1 Pack Body(20x54)-Regular
Fits perfectly and feels nice against your skin. Just wish it had a zipper on the end. That would have made it perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026

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