How many threaded plugs does it come with?

It has 5 holes, and 4 plugs. Basically they assume you will use at least one.

How can it be 4.2 inches by 5.5 inches? That's not a circle. So, is it safe to assume that the 5.5 inch measurement includes the mounting tabs?

Yes ,that point would be the widest footprint when mounting this box 5.5" . That means that the space that this box would fit between two fixed objects is 5.5"

Mine shows that it is Made in India

What is the depth of this box?

The inside depth is 2 1/2 inches

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Description

⚡ Power your projects with Sigma’s weatherproof precision!

READY TO INSTALL - Includes mounting lugs, closure plugs, and a pre-installed ground screw for hassle-free setup.
RUGGED DURABILITY - Die-cast construction with powder coating ensures long-lasting corrosion resistance.
SPACIOUS CAPACITY - Generous 16 cu. in. volume accommodates complex wiring needs with ease.
VERSATILE 5 HOLE DESIGN - Easily connect multiple conduits or mount lighting with five 1/2-inch knockouts.
WEATHERPROOF CONFIDENCE - Certified UL and CSA listed, perfect for wet, damp, or dry environments.

The Sigma Electric 143854WH 1/2-Inch 5 Hole Round Box is a durable, weatherproof junction box designed for versatile conduit connections and lighting mounts. Featuring a corrosion-resistant die-cast body, five 1/2-inch knockouts, and UL/CSA wet location ratings, it ensures reliable performance in any environment. Complete with mounting hardware and a pre-installed ground screw, it’s engineered for professional-grade installations.

Specifications

Material	Metal
Brand	Sigma Engineered Solutions
Color	White
Style	Compact
Product Dimensions	4.2"D x 5.5"W x 2.26"H
Finish Type	Powder Coated
Installation Type	Screw-In
Item Weight	0.5 Pounds
Capacity	16 Cubic Inches
Specification Met	Csa, Nema 3r, Ul
Manufacturer	Sigma Electric
UPC	031857643850
Global Trade Identification Number	00031857643850
Part Number	143854WH
Item Weight	8 ounces
Item model number	b5b4dfb4-09e3-40da-b716-f01bcab2f649
Is Discontinued By Manufacturer	No
Size	1 Count (Pack of 1)
Finish	Powder Coated
Thickness	N/A Inches
Item Package Quantity	1
Number Of Holes	5
Cutting Diameter	5.5 Inches
Included Components	Sigma Engineered Solutions
Batteries Included?	No
Batteries Required?	No
Warranty Description	Warranty
Assembled Diameter	5.5 Inches

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