Square D MH38 Steel Enclosure Box NEMA 1 20 Inch W x 38 Inch H x 5.75 Inch D

MPN: MH38
UPC: 785901378884
PPN: SCH-MH38

$177.23

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Description

NQ and NF Panelboards applications include commercial buildings, industrial buildings, data centers, stadiums, and offices. NQ and NF Panelboards are versatile panelboards that feature a wide selection of circuit breakers, accessories, and ready to install kits. These panelboards have many different options for your enclosure box and its accessories. This enclosure box is rated as a Type 1 with one blank end wall and one end wall with knockouts for common conduit sizes. The enclosure dimensions are 20 inch width x 38 inch height x 5.75 inch depth. NQ and NF enclosures are UL listed for use in the USA and Canada. The end walls of NF and NQ enclosures are removable to simplify field modification to support the widest range of electrical conduit connections. NC trim fronts for interiors rated up to 250A may be screwed directly to the deadfront of the NF or NQ panelboard. NC trim fronts for interiors rated 400A or greater are vented and designed to be screwed directly to the Type 1, 2 enclosure of the NF or NQ panelboard. MHxxWP enclosures provide Type 3R/5/12 protection to NF and NQ Panelboards, and are supplied with removable blank end walls. MHxxBE and MHxxD9 Type 1 enclosures are supplied with removable blank end walls at both ends. MHxx enclosures have one blank end wall and one end wall with knockouts for common conduit sizes.

Features

Designed exclusively as a foundational backbox for Square D NQ (240V) and NF (480Y/277V) electrical panel interiors, this 38-inch enclosure ensures a precise, factory-approved fit. By utilizing OEM-matched components, commercial electricians can eliminate frustrating alignment issues during assembly and guarantee full compliance with strict UL panel-building standards.
Measuring exactly 38" high by 20" wide and 5.75" deep, this generously sized electrical rough-in box provides the essential wire bending space required for complex, high-amperage commercial distributions. These standardized dimensions simplify structural planning and conduit routing, drastically speeding up the installation phase for large-scale facility upgrades or new constructions
Constructed from heavy-gauge galvanized steel, this NEMA 1-rated enclosure provides robust, dependable protection for indoor electrical distribution systems against accidental personnel contact and falling dirt. This ensures your sensitive circuit breakers and main lugs are heavily shielded from everyday warehouse or office hazards, prolonging equipment lifespan while strictly satisfying NEC indoor installation codes.
Engineered as a highly versatile bare enclosure, the MH38 seamlessly accepts both flush (NC38F) and surface (NC38S) front trims, allowing contractors to adapt on the fly to changing architectural finishes. Purchasing this rough-in box separately from the active interior and cover prevents critical components from suffering drywall or paint damage during the early, messy phases of construction.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	United States
Depth	5.75 in

Compliance	\| \| \|TAA Compliant \| BAA Compliant \| BABA Compliant \| BAA Compliant via COTS

Important Information Attributes

Persona Type Ids	EU, EUA, LC, OM, SC
Carbon Footprint Of The Distribution Phase [A4]	7.325225615729504, 7 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]	0.00001413954112859084, 0 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]	kg CO2 eq., 0
Local Publishable Date	2026-07-28
Stocking Flag	N
Weee Scope	Out
Eoli Availability Display	No need of specific recycling operations
Reach Full Compliance Status Id	NOT_CONTAINING_SVHC
Rohs Eur In Scope	No
Rohs Eur Conformity Date	2532
China Rohs In Scope	No
With Recycled Cardboard	No
Product Contributes To Saved And Avoided Emissions	No
Tier	1
Function Option	Standard
Market Segmentation	Commercial
Enclosure Material	steel
Product Availability	Stock - Normally stocked in distribution facility
Returnability	Yes
Sustainable Packaging	No
Pep Code	ENVPEP2510012_V1-EN
Pep Verification Date	2025-11-01
Psr Version	PSR-0005-ed3.1-EN-2023 12 08
Data Source	extrapolated product
Functional-unit Quantity	1
Reference Lifetime In Y	20
Energy Model - Installation [A5]	No energy used
Energy Model - End Of Life [C1-c4]	Global, European and French datasets are used.
Height Nominal	38 in
Certificate Agency	cULus
Nbr. Of Units In Pkg.	1
Take-back	No
Customs Code	8538100000

Persona Type Names	End User, Consumer, Contractor, Original Equipment Manufacturer, Electrician
Carbon Footprint Of The End-of-life Phase [C1 To C4]	21 kg CO2 eq., 20.760063278759475
Carbon Footprint Of The Manufacturing Phase [A1 To A3]	87 kg CO2 eq., 87.06347789186316
Local Data Status	Publishable
Return Indicator	Y
Stock Policy	2
Scope Perimeter	At least in Europe
Reach Full Compliance Status	Free of Substances of Very High Concern above the threshold
Reach Compliance Directive	Free of Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	Yes
Tier Id	1
Function Option Id	STANDARD
Market Segmentation Id	COMMERCIAL
Product Kit Identifier	N
Energy Efficiency Optimized	False
Product Or Component Type	enclosure
Software Version	v6.2.5-6
Total Lifecycle Carbon Footprint	115 kg CO2 eq.
Database Version	2024-01
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review
Functional-unit Description	Protect people from direct contact with live active parts and ensure the grouping of control, command and protection devices in a single enclosure or cabinet having the following dimensions H x L x D or an assembly of X enclosures or cabinets having the following dimensions H x L x D, with rated current In, while protecting them against mechanical impacts (IK) and the penetration of solid objects and liquids (IP), according to the appropriate use scenario, and for the reference service life of the product of 20 years.
Functional-unit Unit	unit
Energy Model - Manufacturing [A1-a3]	Electricity Mix; Low voltage; 2020; Mexico, MX
Energy Model - Use [B6]	Electricity origin
Recyclability Potential In %	97
Width Nominal	20 in
[Ue] Rated Operational Voltage	600 V AC48 V DC
Package Weight(Lbs)	14.061 kg
Warranty (In Months)	18

Environment Attributes Main

China Rohs Regulation	Product out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Reach Free Shvc	Yes
Toxic Heavy Metal Free	Yes
Carbon Footprint	115.14878092589326
Eu Rohs Directive	Compliant
Packaging Made With Recycled Cardboard	No
Reach Free Of Svhc	Yes
Pep Code	ENVPEP2510012_V1-EN
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review

Take Back	No
Recycled Metal Content At Cr Level	0 %
Mercury Free	Yes
Environmental Disclosure	ENVPEP2510012_V1-EN
Nema Degree Of Protection	NEMA 1
Packaging Without Single Use Plastic	Yes
Reach Regulation	Free of Substances of Very High Concern above the threshold
Pep Verification Date	2025-11-01
Psr Version	PSR-0005-ed3.1-EN-2023 12 08