Tenco Hydro · In-House Fabrication
Custom Enclosures & Control Panels
Electrical Panels, Instrument Housings & Process Enclosures
From a simple NEMA 4X junction box to a fully built UL508A stainless control panel — Tenco Hydro designs and fabricates custom enclosures in-house. 304SS, 316SS, carbon steel, polypropylene, and FRP. All cutouts, hardware, and internals included. Customer-approved drawings before we build.
304SS Control Panel — Shop Fabrication
Instrument Enclosure — CAD Drawing
Format: ENC-[Type]-[Material]-[Size]-[Rating]-[Finish]-[Cutouts]-[Hardware]-[Accessories]
ENC-PNL-304SS-36x24x12-NEMA-4X-FIN-4B-CUT-HMI+BTN-HW-QTRN-ACC-BKPNL+FAN-UL508A
7
Enclosure Types
304/316
SS Options
NEMA 4X
Standard Rating
UL508A
Panel Assembly
Enclosure Types
What We Build
Every enclosure is custom-fabricated to your dimensions and requirements. We don't modify off-the-shelf boxes — we build from raw sheet to finished enclosure in-house.
PNL — Most Common
Electrical Panel Enclosure
Free-standing or wall-mount enclosures for motor starters, VFDs, PLCs, and electrical equipment. Custom sub-panels, DIN rail, back plates, and cable management.
JB
Junction Box
General-purpose junction and terminal enclosures for field wiring consolidation. All sizes from 6"×6" to 24"×24". Gasketed and rated NEMA 4/4X standard.
INST — Popular
Instrument Enclosure
Compact housings for field instruments — transmitters, controllers, displays. With sunshade, insulation, and purge options for outdoor or classified area service.
MNFLD
Manifold / Valve Enclosure
Custom housings for valve manifolds, solenoids, and process piping components. Sized to your P&ID layout with penetrations and access doors built in.
WALL
Wall-Mount Operator Panel
Shallow wall-mount enclosures for push buttons, HMI panels, selector switches, and operator interface devices. Any size, any button layout.
PEDS
Pedestal-Mount Enclosure
Floor-mounted pedestal enclosures for operator stations, HMIs, and standalone control panels in process areas. Stainless pedestal and enclosure fabricated together.
CUST
Custom Enclosure
Non-standard geometry or function. Provide a sketch, DXF, or description — our engineers will design and fabricate exactly what your application needs.
RACK
Rack / Skid-Mount Enclosure
19" or 23" rack-mount enclosures and skid-top instrument boxes. Integrated into pump stand or piping skid assemblies for a complete fabricated package.
Interactive Configurator
Build Your Part Number
Select your options to generate your ENC part number. Share it with us when requesting a quote.
1 — Enclosure Type
2 — Material
3 — Enclosure Size (W × H × D inches)
W ×
H ×
D
4 — NEMA / IP Rating
5 — Surface Finish
6 — Cutouts & Penetrations (select all that apply)
7 — Door Hardware (select all that apply)
8 — Accessories (select all that apply)
9 — Certifications (select all that apply)
Your Part Number
ENC-PNL-304SS-24x20x8-NEMA-4X-FIN-4B-CUT-NONE-HW-QTRN
Type
PNL — Panel Enclosure
Material
304SS — 304 Stainless
Size
24 × 20 × 8 in
Rating
NEMA-4X
Finish
FIN-4B — #4 Brushed
Cutouts
None
Hardware
HW-QTRN
Accessories
None selected
Certs
None selected
No commitment · Engineers respond within 2 business hours
Materials of Construction
Built for Your Environment
We stock 14 and 16 gauge 304SS and 316SS sheet. All stainless fabrication is done in-house by AWS-certified welders. Carbon steel, polypropylene, and FRP also available.
304SS
304 Stainless
Most common enclosure material. Excellent corrosion resistance. 14 or 16 gauge standard. Brushed or mill finish.
Food · Water · Industrial
316SS
316 Stainless
Superior chloride and chemical resistance. Required for marine, pharmaceutical, and aggressive chemical environments.
Chemical · Pharma · Coastal
CS-PNT
Carbon Steel
Cost-effective for indoor dry environments. Powder coated ANSI 61 gray or custom RAL. NEMA 12 standard.
Indoor Industrial · Budget
PP
Polypropylene
Excellent acid and caustic resistance. Lightweight, non-conductive. Ideal for plating and chemical processing areas.
Corrosive Chemical · Plating
FRP
Fiberglass (FRP)
High-corrosion outdoor service. UV-resistant gel coat. NEMA 4X rated. Where stainless is cost-prohibitive.
Outdoor · High-Corrosion
NEMA & IP Protection Ratings
Rated for Your Environment
All ratings are designed and gasketed to spec — not just labeled. We'll recommend the right rating for your installation based on your environment and application.
Rating
Name
Description
Environment
NEMA 1
General Purpose
Protection against contact with enclosed equipment and falling dirt. Standard clean indoor panel rooms.
Indoor
NEMA 3R
Rainproof Outdoor
Protection against rain, sleet, and external ice formation. Standard for outdoor electrical panels.
Outdoor
NEMA 4
Watertight
Windblown dust, rain, splashing and hose-directed water. Common in process areas and wash-down zones.
Washdown
NEMA 4X
Corrosion Resistant
NEMA 4 plus corrosion resistance. Standard for food & beverage, wastewater, and chemical environments. Most common spec.
Corrosion Resist.
NEMA 7
Hazardous Cl. I
Class I, Division 1 hazardous locations. Explosion-proof for flammable gas and vapor environments (NEC 500).
Hazardous
NEMA 12
Industrial Duty
Indoor industrial protection against dust, falling dirt, and dripping non-corrosive liquids. Standard for panel rooms.
Industrial
IP65/66
IEC Water Jet
IEC equivalents to NEMA 4/4X. IP65 dust-tight + water jet; IP66 for high-pressure washdown applications.
IEC / Export
IP67
Temporary Immersion
Submersible to 1 meter for 30 minutes. Used for below-grade or flood-prone installations.
Submersible
What's Included
Engineered & Built Right From The Start
In-House Fabrication
- 304SS and 316SS welding by AWS-certified welders
- CNC bending, cutting, and punching in-house
- 14 and 16 gauge stainless standard stock
- Carbon steel, polypropylene, and FRP available
- Customer-approved CAD drawings before build
Cutouts & Machining
- CNC-machined cutouts — precise fit, clean edges
- HMI and display cutouts sized to your device model
- 22mm and 30mm push button / selector holes
- Conduit knockouts in any trade size
- Custom DXF cutouts — any geometry possible
Hardware & Closure
- Quarter-turn and 3-point compression latches
- Key-locking latches for controlled access
- Continuous piano hinge for large/heavy doors
- Lift-off removable door option
- Polycarbonate or tempered glass viewing windows
Thermal Management
- Thermostat-controlled strip heaters for cold climates
- Cooling fans with filtered intake louvers
- Sealed through-door air conditioners
- Type Z purge systems for C1D2 hazardous locations
- Foam-in-place or sheet insulation liners
Certifications & Compliance
- UL508A industrial control panel assembly
- NEMA 1 through NEMA 7 environmental ratings
- C1D1 and C1D2 hazardous location ratings
- CSA, FDA, and 3-A sanitary available
- PE stamps available in all 50 states
Integration with Tenco Skids
- Enclosures built into pump stand or piping skids
- Pedestal and skid-top mounting fabricated together
- Pre-wired to terminal block before shipment
- SCADA-ready wiring and conduit stub-outs
- One vendor for tank, piping, and enclosure
Accessories
Everything Installed Before It Ships
All accessories are specified at order time and installed at the factory. Nothing left for the field to source or mount.
ACC-BKPNL
Back Panel / DIN Rail
Painted steel back panel with DIN rail for component mounting. Removable for bench wiring.
ACC-HEAT
Thermostat + Heater
Strip heater with adjustable thermostat for cold climates or condensation prevention.
ACC-FAN
Cooling Fan + Filter
Thermostat-controlled cooling fan with filtered intake. Sized to your heat load.
ACC-AC
Air Conditioner
Sealed NEMA 4/4X air conditioner for high heat load or VFD-heavy enclosures.
ACC-PURGE
Purge & Pressurization
Type Z purge for C1D2 locations. Maintains positive pressure to prevent gas ingress.
ACC-LIGHT
Interior LED Light
Door-actuated LED strip. 24VDC or 120VAC with manual on/off switch option.
ACC-OUTLET
GFCI Outlet
Interior GFCI-protected 120VAC outlet for laptop, tools, or maintenance equipment.
ACC-LOCK
Door Interlock
Door-mounted disconnect or interlock wiring for power-off-before-open safety.
ACC-SUNSHED
Sun Shield
Stainless or painted sunshade for outdoor instrument and panel enclosures.
ACC-INSUL
Insulation Liner
Foam or sheet insulation liner for high or low ambient temperature service.
ACC-GASKET
Full-Perimeter Gasket
Closed-cell foam or silicone door gasket for NEMA 4/4X sealing. Tool-free replacement.
ACC-GROUND
Grounding Stud
Internal and external grounding studs per NEC. Standard on all NEMA 4/4X enclosures.
ACC-NAMEPL
Nameplate / Labels
Engraved stainless or anodized aluminum nameplate. ANSI/ISA labeling standard.
ACC-WINDR
Viewing Window
Tempered glass or polycarbonate door window for visual monitoring without opening.
ACC-CUST
Custom Accessory
Customer-specified addition. Describe your requirement at quote time.
Certifications & Approvals
Stamped, Listed & Compliant
Specify required certifications at quote time. We build to the code your project demands — UL, NEMA, CSA, and hazardous location ratings all available in-house.
UL 508A
UL 508A
Industrial control panel assembly. UL-listed panels for motor control and automation.
UL 50
UL 50 / 50E
Enclosures for electrical equipment. Heating, safety, and general-purpose applications.
CSA
CSA C22.2
Canadian electrical code compliance for cross-border projects.
C1D2
Class I Div 2
Hazardous location rated per NEC 500. Flammable gas/vapor environments.
C1D1
Class I Div 1
NEMA 7 explosion-proof. Most demanding hazardous area classification.
ATEX
ATEX Certified
European hazardous area certification for international projects.
FDA
FDA Compliant
Food contact approved finishes and materials per FDA 21 CFR.
3-A
3-A Sanitary
Dairy and food-grade sanitary standards for direct food-contact areas.
IP66/67
IEC IP Ratings
IEC 60529 ingress protection ratings for international projects.
ISO 9001
ISO 9001
Quality management documentation package available with all orders.
Ready to Spec Your Enclosure?
Use the configurator above to generate a part number, then tell us your application. Our engineers will review your requirements and respond within 2 business hours. We've been building custom enclosures and control panels for 60+ years.
Get a Quote
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Request a Quote
Tell Us About Your Enclosure
Engineers Respond Within 2 Business Hours
Use the configurator to generate a part number, then describe your application below. Include your required dimensions, environment, and any internal components that need to fit. Have a sketch or DXF? Mention it and we'll follow up to collect it.
Phone
708-387-0700
Location720 N Heartland Dr Unit K, Sugar Grove, IL 60554
HoursMon–Fri, 7:00 AM – 5:00 PM CT
Specialties304/316SS welding & CNC fab · UL508A panels · PE stamps all 50 states · Customer-approved drawings before build