SMA Sunny Boy 4000US (SB4000US) Positive Ground Inverter | SunPower Replacement

SMA Sunny Boy 4000US (SB4000US) Positive Ground Inverter | SunPower Replacement

Marsoni

M251S

$1397.50

Get it in 3 business days with 1 day shipping. Friday, May 29

SMA Sunny Boy 4000US (SB4000US) Positive Ground Inverter | SunPower ReplacementWhy these inverters are a great value: These are NEW OLD STOCK, A quality products in factory sealed boxes. USA Manufacturing, German engineering and superior design. (ARRA Compiant). Sunny Boy Inverters are the most popular solar inverters in the world for over two decades. Exceptional real world efficiencies make Sunny Boy the top choice for solar designers and installers. These inverters are among the most reliable designs SMA has ever built.

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Your SMA Sunny Boy 4000US (SB4000US) Positive Ground Inverter | SunPower Replacement orders ship within 1-2 business days.

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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.
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Please click here for more details>>> Return & Exchange Policy

I usually would buy XL size but in this case I bought XXL thinking since it's cotton it might shrink. But when I tried the T-shirt it was too small. My older XL sized T-shirt has 2 1/2" larger total shoulder width and 3" wider body width. See attached pictures. Length was also a bit shorter by about 1/2". I will to return it.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 15, 2026

Verified Purchase

Pattie B

Lexington, US

★★★★★ 2

Does not match the size

Size: 3X-Large, Color: Blue

Way smaller than the size indicated. Very thin material, almost see- thru.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on December 5, 2025