The C3RWT418 is an 18 in long, 4 x 4 in Type 3R wiring trough for electricians and panel builders who need to gather several splices or conductor junctions into one weather-resistant section outdoors. Its compact cross-section and short run suit a tight wall space between a few pieces of outdoor equipment.
Like every trough in the C3RWT series, it is formed and spot welded from galvanized steel (the series is made in 14 or 16 gauge), and both the enclosure and cover are finished in ANSI 61 gray powder coating, which is why the part is listed as Galv/Gray. A drip shield top design protects the enclosure against rain, snow or sleet, and the slip on front cover removes for access and is secured with screws.
The nominal size is 4 in x 4 in x 18 in (102 mm x 102 mm x 457 mm), with a shipping weight of 6 lbs (2.72 kg). The part drawing shows an overall length of 18.88 in and a 4.44 x 4.44 in overall section including the drip shield, a front opening of 16.75 x 2.42 in, and inside dimensions of 3.89 x 3.89 in. Mounting is through 4 embossed holes of 0.30 in diameter on the back of the enclosure, spaced 14.00 in lengthwise and 1.75 in vertically.
The C3RWT418 is listed under UL870 Type 3R (UL File # E186830) and CSA Type 3R (CSA Cert. # LL21312), and complies with NEMA Type 3R and IEC 60529, IP24. To meet UL870 - 2008 requirements the series specification sheet shows a bonding stud on the cover and a ground stud in the enclosure. The part is RoHS and REACH compliant. Note that effective August 17, 2026 the grounding strap and padlocking hasp previously included with each trough are no longer provided.
| Mounting Holes | 4 embossed holes, 0.30 in diameter, on back of enclosure |
| Mounting Hole Spacing, Vertical | 1.75 in |
| Mounting Hole Spacing, Lengthwise | 14.00 in |
| Series | C3RWT Series |
| Application | Designed for use to protect multiple wiring junctions in outdoor environments against the ingress of rain, sleet, snow and the external formation of ice |
| Product Type | Type 3R Wiring Trough |
| Long Description | Type 3R Wiring Trough - 4x4x18 - Galv/Gray |
| Short Description | 3R TROUGH 4X4X18 |
| Enclosure Depth (D) | 4.00 in (102 mm) |
| Enclosure Height (H) | 4.00 in (102 mm) |
| Enclosure Length (L) | 18.00 in (457 mm) |
| Front Opening (Drawing) | 16.75 in x 2.42 in |
| Nominal Size (H X W X D) | 4 in x 4 in x 18 in (102 mm x 102 mm x 457 mm) |
| Overall Length (Drawing) | 18.88 in |
| Inside Dimensions (Drawing, I/S) | 3.89 in x 3.89 in |
| Overall Section Incl. Drip Shield (Drawing) | 4.44 in x 4.44 in |
| UPC | 623980847313 |
| UNSPSC | 39131710 |
| Part Number | C3RWT418 |
| Packaging Type | Box |
| Shipping Weight | 6 lbs (2.72 kg) |
| Top | Drip shield top design protects against rain, snow or sleet |
| Cover | Slip on removable front cover secured with screws |
| Finish | Enclosure and cover finished in ANSI 61 gray powder coating |
| Material | Galvanized steel, formed and spot welded (series: 14 or 16 gauge) |
| Grounding | Bonding stud on cover and ground stud in enclosure (UL870 - 2008) |
| Not Included (Effective August 17, 2026) | Grounding strap and padlocking hasp no longer provided |
| Enclosure Rating | NEMA Type 3R; IEC 60529, IP24 |
| UL | UL870 Type 3R |
| CSA | CSA Type 3R |
| IEC | Complies with IEC 60529, IP24 |
| NEMA | Complies with NEMA Type 3R |
| UL File # | E186830 |
| CSA Cert. # | LL21312 |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Business account holders get access to exclusive pricing, volume discounts, and dedicated support. Create a free account to get started.
The nominal size is 4 in x 4 in x 18 in (102 mm x 102 mm x 457 mm). The drawing shows an overall length of 18.88 in, a 4.44 x 4.44 in overall section including the drip shield, a 16.75 x 2.42 in front opening and 3.89 x 3.89 in inside dimensions.
Yes. It is a Type 3R wiring trough designed to protect multiple wiring junctions in outdoor environments against the ingress of rain, sleet, snow and the external formation of ice. It is listed UL870 Type 3R and CSA Type 3R and complies with NEMA Type 3R and IEC 60529, IP24.
Through 4 embossed 0.30 in diameter mounting holes on the back of the enclosure, spaced 14.00 in lengthwise and 1.75 in vertically per the part drawing.
No. Effective August 17, 2026, the grounding strap and padlocking hasp previously included with each trough are no longer provided. The series specification sheet shows a bonding stud on the cover and a ground stud in the enclosure.
It is formed and spot welded from galvanized steel (the series uses 14 or 16 gauge), with the enclosure and cover finished in ANSI 61 gray powder coating.
The shipping weight is 6 lbs (2.72 kg), and it ships in a box.
Hammond Manufacturing · 1413BGS
Hammond Manufacturing · 1413BKLGS
Hammond Manufacturing · 1413BKS
Hammond Manufacturing · 1413BNS
Hammond Manufacturing · 1413CGRALS
