B-Line Eaton series Type 1 jun...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$715.61
B-Line Eaton series Type 1 junction boxes, 18" height, 8" length, 18" width, 1, Screw cover, SC NK enclosure, Surface mounted, Medium single door, No

B-Line Eaton series Type 1 junction boxes, 18" height, 8" length, 18" width, 1, Screw cover, SC NK enclosure, Surface mounted, Medium single door, No

(No reviews yet) Write a Review

Model: 18188 SC NK
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$715.61
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like
Eaton B-Line series Type 1 junction boxes, 18" height, 8" length, 18" width, NEMA 1, Screw cover, SC NK enclosure, Surface mounted, Medium single door, No knockout, Thru holes, Carbon steel

Manufacturer Resources

Product Specs

Certifications:
UL 50
Country Of Origin:
United States
Cover Type:
Screw
Finish Color:
Painted
Mounting Hole Details:
Thru holes
Mounting Method:
Surface
Nema Rating:
1
Product Height:
18 in
Product Length Depth:
8 in
Product Weight:
20.6 lb
Product Width:
18 in
Special Features:
Keyhole slots on cover, plated screws
Wall Thickness:
16 gauge
Department:
Electrical
Product Model:
SC NK enclosure
Product Color:
ANSI 61 Grey
Product Style:
Medium single door
Product Material:
Carbon steel

B-LINE 18188 SC NK – Frequently Asked Questions

1) Can a NEMA 1 screw cover junction box like the B-Line 18188 SC NK be used outdoors or in a wet location?
No. The 18188 SC NK carries a NEMA Type 1 rating, which is indoor use only, for protection against incidental contact and falling dirt. It offers no protection against rain, washdown, dust, or oil. For an outdoor wall or a damp mechanical yard you need a Type 3R or Type 4 enclosure instead.
2) What are the actual box dimensions of the B-Line 18188 SC NK junction box?
18 inches high, 18 inches wide, and 8 inches deep. That 8 inch depth is what matters most on a pull box, since it sets your conduit entry room and bending space behind the cover.
3) Does the 18188 SC NK come with knockouts, or do I have to punch my own conduit holes?
It ships with no knockouts. NK in the model designation means no knockout, so every conduit entry gets field punched wherever your raceway lands. That is the reason to pick this version over a knockout box when your conduit layout is not standard, and the reason to avoid it if you want holes already there.
4) How does the cover come off on this B-Line screw cover box, and is it a hinged door?
It is a screw cover, not a hinged door. The cover lifts off entirely once the plated screws are backed out, and keyhole slots on the cover let you loosen the screws and slide the cover off rather than fully removing every fastener. If you need a door you can swing open repeatedly for routine access, a hinged cover enclosure is the better choice.
5) How is the 18188 SC NK mounted to the wall, and does it include mounting hardware?
Surface mount, using thru holes in the back of the box. You supply the anchors or bolts to suit the substrate, whether that is a concrete wall, block, or Unistrut. At 20.6 pounds empty, an 18 by 18 box wants anchors rated accordingly plus a second set of hands during hang.
6) Is this B-Line enclosure UL listed for an inspected commercial installation?
The 18188 SC NK is built to UL 50, the standard covering enclosures for electrical equipment. Paired with the Type 1 indoor rating, that is what an inspector looks for on an indoor pull or junction box. It is made in the US.
7) What part number do I order for the 18 x 18 x 8 B-Line screw cover box with no knockouts?
The Eaton B-Line part number is 18188 SC NK. The number reads as the dimensions, 18 high by 18 wide by 8 deep, followed by SC for screw cover and NK for no knockout.
8) What gauge steel is the B-Line 18188 junction box, and is it painted?
16 gauge carbon steel, painted in ANSI 61 grey. That is the standard utility grey that matches most switchgear and panel finishes, so it blends into an existing electrical room without repainting. Bare steel in a damp room will rust, so keep field cut edges from your conduit punches touched up.
How fast can I get the B-LINE 18188 SC NK delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE 18188 SC NK come with a warranty?
Absolutely. The B-LINE 18188 SC NK is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE 18188 SC NK?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE 18188 SC NK from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!