SKU: 90997528612

PC1816HW | Stahlin 18.0x16.0x11.0" PolyStar Series Polycarbonate Enclosure – NEMA 4X – Opaque Cover, No Latches (4 Screws)

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Description

PC1816HW | Stahlin 18.0x16.0x11.0" PolyStar Series Polycarbonate Enclosure – NEMA 4X – Opaque Cover, No Latches (4 Screws)Need a quote or custom modification? Contact ACI Automation. Request a Quote Product Overview PolyStar Series polycarbonate enclosures deliver heavy duty NEMA 4X protection in a lightweight, chemical resistant design. Self extinguishing, non halogenated, UL 746C F1 UV rated for outdoor exposure. Available in opaque, clear, white, black, with mounting flanges or SS latches. The PC1816HW is a PolyStar Series Polycarbonate enclosure with a Opaque Cover,

Need a quote or custom modification? Contact ACI Automation. Request a Quote →

Product Overview

PolyStar™ Series polycarbonate enclosures deliver heavy-duty NEMA 4X protection in a lightweight, chemical-resistant design. Self-extinguishing, non-halogenated, UL 746C F1 UV-rated for outdoor exposure. Available in opaque, clear, white, black, with mounting flanges or SS latches.

The PC1816HW is a PolyStar Series Polycarbonate enclosure with a Opaque Cover, No Latches (4 Screws) configuration, rated NEMA 1, 3R, 4, 4X, 6P, 12 / IP66, cULus Listed File #E64358, and CSA Certified. Manufactured in the USA using Stahlin's SolarGuard® proprietary formulation for superior chemical resistance, UV durability, and flame retardancy.

A proven non-metallic alternative to NEMA 4X enclosures from Allied Moulded, Hoffman, Hammond, Saginaw, Wiegmann, Hubbell, Fibox, Integra, and AttaBox.

Key Features

  • NEMA 1, 3R, 4, 4X, 6P, 12 rated — IP66 per IEC 60529
  • cULus Listed (File #E64358) — UL 50, UL 50e, UL 508A
  • CSA Certified C22.2
  • SolarGuard® non-halogenated Polycarbonate — UL 94-5VA flammability rating
  • Continuous poured-in-place polyurethane seamless gasket
  • 304 stainless steel hinge and hardware throughout
  • Molded-in brass inserts for superior pull-out strength
  • Temperature range: -40°F to +185°F
  • Back panels: aluminum, carbon steel, SS, fiberglass, or ABS
  • ModRight® custom modification program compatible
  • Made in USA

Specifications

Catalog Number PC1816HW
Series PolyStar Series
Material Polycarbonate
Interior Dimensions 18.0 x 16.0 x 11.0 in (interior)
Cover Type Opaque Cover, No Latches (4 Screws)
Color RAL 7035 Light Gray
NEMA Types 1, 3R, 4, 4X, 6P, 12
IEC Rating IP66
UL Standards UL 50, UL 50e, UL 508A
cULus Listed File E64358
CSA Standard C22.2
Temperature Range -40°F to +185°F
Flammability UL 94-5VA
Flame Spread NFPA 101 Class A
UV Outdoor Rating UL 746C (f1) Rated
Gasket Closed-Cell EPDM Foam
Country of Origin USA
Availability Usually Stocked — ships within 5 days
List Price $362.18

Applications

✓ Machine control panels
✓ Wastewater treatment
✓ Oil & gas instrumentation
✓ Solar & renewable energy
✓ Marine & offshore
✓ Food & beverage processing
✓ Car wash and wet environments
✓ Mining and heavy industrial
✓ HVAC and building automation
✓ Utility and power distribution
✓ OEM equipment manufacturing
✓ Chemical processing

Competitor Cross-Reference

The Stahlin PC1816HW replaces comparable NEMA 4X enclosures from Allied Moulded, Hoffman, Hammond, Saginaw, Wiegmann, Hubbell, Fibox, Integra, and AttaBox. Non-metallic construction eliminates rust, eliminates painting, reduces weight, and delivers superior chemical resistance — often at a lower total installed cost.

Manufacturer Comparable Series Stahlin Advantage
Hoffman (nVent) A-Series / N4X Steel Non-metallic: zero corrosion, no painting, lighter weight
Hammond Mfg 1414 / 1481 Steel N4X SolarGuard® fiberglass for superior outdoor UV resistance
Saginaw Control SCE Steel Series USA-made fiberglass vs. imported steel alternatives
Wiegmann (Hubbell) WC / N Series Steel Full 304 SS hardware; poured PU seamless gasket
Fibox CAB / MNX Polycarbonate SolarGuard® for high-temp and heavy UV applications
Integra Polycarbonate Series cULus + CSA dual-listed; broader back panel options
AttaBox Centurion Series Extended temp -76°F; integral flange — no assembly
Hubbell Wiring NEMA 4X Polyester UL 746C f1 outdoor rated + ModRight custom mod program
Allied Moulded Series 400 Fiberglass cULus + CSA dual-listed; SolarGuard® UV rating; Made in USA

CAD Drawing Downloads

Download certified CAD drawings for PC1816HW:

Frequently Asked Questions

What NEMA ratings does the PC1816HW carry?

The PC1816HW is rated NEMA 1, 3R, 4, 4X, 6P, 12, protecting against dust, oil, coolants, rain, sleet, hose-directed water, and submersion. Also rated IP66 per IEC 60529.

Is this enclosure cULus Listed?

Yes. The PC1816HW is cULus Listed under File #E64358 per UL 50, UL 50e, and UL 508A, and CSA Certified to C22.2.

What back panel options are available?

Back panels are available in aluminum (AL), painted carbon steel (CS), stainless steel (SS), fiberglass (FG), and ABS. Add the suffix to your order. Contact ACI Automation for sizing and compatibility guidance.

Can I modify or customize this enclosure?

Yes. Stahlin's ModRight® program supports custom cutouts, windows, printing, laser engraving, mold-in colors, DIN rail kits, EMI/RFI shielding, and custom mounting. Submit your request through ACI Automation.

How do I get pricing?

ACI Automation is an authorized Stahlin distributor. List price is shown above. Request a quote for distribution pricing and lead times.

What is the lead time?

Availability code B: Usually Stocked — ships within 5 days. Contact ACI Automation to confirm current stock.

What is the temperature rating?

The PC1816HW is rated -40°F to +185°F — suitable for cold storage, outdoor industrial, and elevated-temperature applications.

Ready to Order or Need a Custom Quote?

ACI Automation is your authorized Stahlin distributor. We serve OEM panel builders, system integrators, and MRO customers with fast quotes, application support, and ModRight custom solutions.

Request a Quote
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90997528612

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4.8 ★★★★★
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K. Hansen
West Palm Beach, US
★★★★★ 5
Good taste
Size: 2.32 Pound (Pack of 1), Style: New
Tastes like tang. Take daily to reduce cholesterol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
A
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Alison Lindley
Whiting, US
★★★★★ 5
Great Seller and Product
Size: 2.32 Pound (Pack of 1), Style: New
Wonderful customer service!! I needed to refund as I ordered by mistake, and they refunded right away!! Will order again from this seller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
R
Verified Purchase
Robert Kern
Carnegie, US
★★★★★ 5
Great Product, Works as Advertised
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
This product works exactly as described. It makes BM's smoother and gentler. I personally use the unflavored, no sweeteners added version, and honestly, it does not taste very good, but I feel that the results are worth it, and I do not like adding extra sweeteners or flavorings to my diet. I have used this product for many years and have found that about 1 1/2 to 2 tbsps in 12 ounces of water works the best for me. You will need to experiment a bit to find the ratio that works best for you. I recommend that you start on the low side and gradually increase the amount of Metamucil as needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
E
Verified Purchase
EZ
Pawtucket, US
★★★★★ 5
Healthy, Effective, and great when mixed with Splenda and Koolaid mix. The best of many options I've tried.
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
I've sampled a few different varieties of fiber supplements, including both Benefiber and off-brands, and I found that Metamucil provided the most fiber in the least offensive beverage. Compared to the other brands, this stuff is smoother textured, and goes down easier, as a sort of happy medium between the grittier supplements and the thicker ones. What about effectiveness? I have apocalyptic IBS, and since starting to take this stuff regularly (one giant glass every morning and evening), my BMs have been much more regular, and more manageable. Flare-ups happen less, and it even seems to do a decent job when taken with meals of cutting the hit to my stomach and gut. I tend to take more than the recommended amount, with an even larger serving of water, as I feel like it helps me stay hydrated and full throughout the day. I started taking the classic orange Metamucil, but although I really liked the superior flavor (rather like Orange Tang) it packed several times more sugar in each serving than fiber, so while it was great for digestive health, the overall health impact was too negative. I also sampled the sugar-free berry flavors, but found that, although it was ostensibly healthier, the flavor wasn't great, and in addition it suffered from the aspartame aftertaste and further effects (Aspartame gives me headaches). So this was a dilemma for me. What to do? I actually wrote to Metamucil about it, and they recommended this product. The downside is that it comes with absolutely no flavor, so you need to provide your own in order to mask the texture (I wouldn't dream of trying to mix this in plain water--yuck!) The upside is they pack 100+ servings into a container, and you really are free to blend it into whatever suits your fancy. Obviously if you mix it with something like orange juice, then you're already negating the benefits of this stuff over the sugary orange flavor, but I've personally found a much better way. I like to mix this stuff with Kool-aid mix and Splenda (Sucralose) sweetener. I buy a ton of Splenda and kool-aid as it mixes up tasting sweet, like sugar, but without the calories or aftertaste. You can dump a spoonful of this stuff into a glass of splenda-koolaid, or just dump 8 servings worth of this stuff in with a packet of koolaid powder and a cup of splenda, and then just mix it up and spoon it into water as needed. Better tasting, sugar-free and packed with good useful fiber. EDIT: I wish I could subscribe to this stuff. Price of splenda has gone up, but I've figured out thatyou can just dump 7 packets of koolaid mix and 7 dashes of sucralose into a container of this and shake it up.
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Reviewed in the United States on February 26, 2015
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Review Dude
Alexandria, US
★★★★★ 5
#1 for #2's
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
I like the lack of sweeteners and flavor. I just want the stuff that helps me poop. There is some citric acid in it (no idea why) which gives it a mildly acidic taste. Other than that, it does the trick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026

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