EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input

EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input

Marsoni

M251S

$1775.00

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

EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV InputEG4 FlexBOSS21 Hybrid Inverter 48V Split Phase 21kW PV Input Versatile and Powerful Hybrid Inverter The EG4 FlexBOSS21 is a versatile 48V split phase, hybrid inverter charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5 ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs

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I happened to get lucky and get a warehouse deal at an additional 30% discount. Even at $25, it feels a little overpriced. But it was easy to assemble and serves its purpose. If you line the Velcro up exactly, the panels sag, if you stretch past even, but where it still grips, they look pretty ok. It is very light and does fold very compact for easy storage.

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Reviewed in the United States on April 3, 2026

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Sunny in AZ

West Palm Beach, US

★★★★★ 5

Great price for a great product

Color: Coal Black

Excellent quality and great price to boot. Easy to assemble and folds up easily to be stored. We are using it as a privacy screen when we have company that needs to sleep on the couch and also to block off a hallway leading to a guest suite. It looks great and is as described in the ad

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Reviewed in the United States on December 16, 2025

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Carissa L

Fort Morgan, US

★★★★★ 1

No.

Color: Coal Black, Color: Coal Black

This was horribly made and a nightmare to put together. You have to basically bend the bars to get the coverings attached. The sizes don't match. The stickers that label the parts are impossible to remove and if you do get them off theres a lot of residue left behind. On top of that once it was put together I noticed theres a big dirty foot print on it which is definitely not mine.

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Reviewed in the United States on January 5, 2026

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Duckie mom

Lake Worth, US

★★★★★ 3

You have to add weight to it

Color: Coal Black

It does its job and it was easy to put together but it's a little on the flimsy side and it will easily be knocked down. So you're going to have to figure out a way to make the legs heavier? I used cinder blocks, single cinder blocks and it works just fine. Just know that it will knock over super easy

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Reviewed in the United States on January 22, 2026

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Oneida P

West Palm Beach, US

★★★★★ 5

The snap to put them together.

Color: Coal Black

This came in handy in the foyer. I didn’t want to see the door from my couch. I must be weak found it hard to snap them together. I kept 2 my daughter took the other 2.

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Reviewed in the United States on May 19, 2026