B-Line Eaton series wiring tro...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$807.43
B-Line Eaton series wiring trough, 4" height, 48" length, 4" width, GRT wiring trough, Embossed thru holes, 15 bottom knockouts, Screw cover, 3R, Ste

B-Line Eaton series wiring trough, 4" height, 48" length, 4" width, GRT wiring trough, Embossed thru holes, 15 bottom knockouts, Screw cover, 3R, Ste

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Model: 4448 GRT
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$807.43
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Eaton B-Line series wiring trough, 4" height, 48" length, 4" width, GRT wiring trough, Embossed thru holes, 15 bottom knockouts, Screw cover, NEMA 3R, Steel, Plated screws, ANSI 61 gray, 16 gauge

Manufacturer Resources

Product Specs

Certifications:
CSA Certified
Closure Type:
Plated screws
Finish Color:
ANSI 61 gray
Material Thickness:
16 gauge
Mounting Method:
Embossed thru holes
Product Height:
4 in
Product Length Depth:
48 in
Product Weight:
14.61 lb
Product Width:
4 in
Special Features:
Cover is held secure by flange and plated screws
Department:
Electrical
Product Type:
GRT wiring trough
Product Details:
GRT wiring trough
Product Length:
48 in

B-LINE 4448 GRT – Frequently Asked Questions

1) Can the B-Line 4448 GRT wiring trough be used outdoors or in a wet location?
The 4448 GRT is a NEMA 3R rated trough, so it is suited to outdoor or damp locations where falling rain and sleet are the concern. It is not a washdown or hosedown enclosure. The cover is screw-on, held by a flange and plated screws, which is what keeps water out at the seam. It is also CSA Certified.
2) What are the actual dimensions of the B-Line 4448 GRT trough?
It is a 4 x 4 x 48 inch trough: 4 inch height, 4 inch width, 48 inch length. That is the standard 4x4 gutter size, so it lines up with other 4x4 troughs and fittings in a run. Shipping weight is 14.61 lb.
3) How does the cover come off on a screw cover wiring trough, and when should I use a hinged cover instead?
On the 4448 GRT the cover is a full-length removable panel secured by plated screws against a flange. You take the screws out to open the whole length, which is what you want for a pull-through run that gets wired once. If the trough sits at a panel you open regularly for maintenance or terminations, a hinged-cover gutter is the easier choice, because you are not handling loose screws and a 48 inch cover overhead.
4) How do I mount the B-Line 4448 wiring trough to a wall or strut?
Mounting is through embossed thru holes in the back of the trough, so it bolts flat to a wall, backboard, or strut run without you drilling the enclosure and compromising the 3R rating. The fasteners themselves are not supplied, so pick anchors or strut nuts to suit the surface and the loaded weight of the gutter.
5) Does this B-Line trough come with knockouts, or do I have to punch my own?
There are 15 bottom knockouts already provided, so drops to panels or devices below the gutter are covered without punching. If you need entries through the ends or the sides, you will be making those yourself with a punch.
6) What part number do I order for a 4x4x48 B-Line screw cover trough?
Order Eaton B-Line 4448 GRT. The number reads directly off the size: 4 inch by 4 inch by 48 inches, screw cover, NEMA 3R. Couplings, end plates, and hangers are separate items.
7) Is 16 gauge steel heavy enough for a wiring trough in a commercial building?
The 4448 GRT is 16 gauge steel, which is the usual body gauge for commercial 4x4 gutter and stiff enough to span between mounting points without oil canning when it is loaded with conductors. It carries an ANSI 61 gray finish, the standard gray that matches typical switchgear and panelboards, so a run looks consistent alongside existing equipment.
How fast can I get the B-LINE 4448 GRT 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 4448 GRT come with a warranty?
Absolutely. The B-LINE 4448 GRT 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 4448 GRT?
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 4448 GRT 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.
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