What brand hub will fit?

Dont Know about hubs, standard RV cord plugs in

What size knockouts in the box?

Well, they’re not knockouts. I had to buy a 1-1/4” bi-metal hole saw to drill the opening. They are marked for different sizes, but have to drill a hole.

Can this be use to connect my generator to my house electrical panel?

Thank you for your question. If you need connect generator to house electrical panel. Please purchase this item. There are 30 amp and 50 amp for choice. https://www.amazon.com/dp/B08NDF37LD

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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50 Amp 125/250 Volt RV Power Outlet Box, Enclosed Lockable Weatherproof NEMA 14-50R Outdoor Electrical Receptacle Panel, 50 Amp RV Receptacle for Camper Trailer Motorhome Electric Car Generator

50 Amp 125/250 Volt RV Power Outlet Box, Enclosed Lockable Weatherproof NEMA 14-50R Outdoor Electrical Receptacle Panel, 50 Amp RV Receptacle for Camper Trailer Motorhome Electric Car Generator

Product ID: 269788789

Details

AC Adapter Current
50 Amps
Brand
EXCELFU
Material
Metal
Number Of Circuits
1
Product Dimensions
5.6"L x 4.8"W

⚡50 Amp heavy-duty current

🔒Lockable anti-theft design

🌧️NEMA 3R rainproof enclosure

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Lock in power, lock out worries — your ultimate RV charging station!

SECURE YOUR ENERGY - Lockable enclosure prevents theft and tampering, ensuring uninterrupted power access.
VERSATILE COMPATIBILITY - Works seamlessly with standard 50A NEMA 14-50P cords for RVs, motorhomes, generators, and EVs.
POWER UP WITH CONFIDENCE - Robust 50 Amp, 125/250 Volt dual-voltage support for all your RV and electric vehicle needs.
INSTALLER FRIENDLY DESIGN - Spacious interior and multiple wiring knockouts make setup quick and hassle-free.
BUILT TO BRAVE THE ELEMENTS - Heavy-gauge iron with NEMA 3R weatherproof rating keeps your power safe rain or shine.

The EXCELFU 50 Amp 125/250 Volt RV Power Outlet Box is a heavy-duty, lockable, and weatherproof electrical receptacle designed for outdoor use. Featuring a NEMA 14-50R outlet with ETL certification, it supports dual-voltage power delivery ideal for RVs, motorhomes, electric cars, and generators. Its spacious interior and multiple wiring options simplify installation, while the lockable iron enclosure ensures safety and theft prevention. Rated NEMA 3R, it withstands rain, snow, and UV exposure, making it a reliable, long-lasting power solution for professional and recreational users alike.

Specifications

ASIN	B08P2L6GKM
Best Sellers Rank	#2,651 in Automotive ( See Top 100 in Automotive ) #12 in RV Plugs, Inlets & Receptacles
Brand Name	EXCELFU
Customer Reviews	4.5 4.5 out of 5 stars (862)
Item Dimensions L x W x H	5.6"L x 4.8"W x 6"H
Item Weight	2.7 Pounds
Manufacturer	EXCELFU
Material Type	Metal
Maximum Current	50 Amps
Number Of Circuits	1
Part Number	RPO-597465
Phase Type	single-phase or three-phase
UPC	191171358059

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