Commercial Electrical Enclosures with Knockouts

Hammond Manufacturing Commercial Electrical Enclosures with Knockouts are ideal for commercial building construction and light industrial needs. These UL-listed enclosures are available in several NEMA ratings, including Type 1 and Type 3R. The Type 1 enclosures are suitable for use as a junction, pull, or switch box in general-purpose indoor commercial applications, while the Type 3R junction boxes provide protection against rain, sleet, snow, and dripping water. Hammond Manufacturing Commercial Electrical Enclosures feature knockouts on the bottom of the enclosure or on all four sides for design flexibility.

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Series
Hammond Manufacturing Junction Boxes N1 Screw Cover - 10 x 8 x 4 - Steel/Gray
Datasheet
36May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 8 in 4 in 10 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 16 x 16 x 8 - Steel/Gray
Datasheet
12May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 16 in 8 in 16 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 8 x 8 x 4 - Steel/Gray
Datasheet
100May Stock
57Inaasahan 8/11/2026
Min.: 1
Mult.: 1

Screw Cover Steel Gray 8 in 4 in 8 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 12 x 8 x 4 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 8 in 4 in 12 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 6 x 4 x 4 - Steel/Gray
Datasheet
8May Stock
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 4 in 4 in 6 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes Type 3R Hinge Cover - 8 x 8 x 6 - Steel/Gray
Datasheet
2May Stock
Min.: 1
Mult.: 1

Hinged Snap Latch Door Galvanized Steel Gray 8 in 6 in 8 in Screw IP24 3R UL 50 C3RHCRSM
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 10 x 10 x 4 - Steel/Gray
Datasheet
2May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 10 in 4 in 10 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 12 x 12 x 4 - Steel/Gray
Datasheet
4May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 12 in 4 in 12 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 12 x 12 x 6 - Steel/Gray
Datasheet
8May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 12 in 6 in 12 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 18 x 12 x 4 - Steel/Gray
Datasheet
6May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 12 in 4 in 18 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 8 x 8 x 4 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 8 in 4 in 8 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 8 x 8 x 6 - Steel/Gray
Datasheet
2May Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 8 in 6 in 8 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Screw Cover - 10 x 10 x 4 - Steel/Gray
Datasheet
8May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 10 in 4 in 10 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 10 x 8 x 6 - Steel/Gray
Datasheet
3May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 8 in 6 in 10 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 12 x 10 x 4 - Steel/Gray
Datasheet
7May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 10 in 4 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 12 x 12 x 4 - Steel/Gray
Datasheet
4May Stock
4Inaasahan 8/4/2026
Min.: 1
Mult.: 1

Screw Cover Steel Gray 12 in 4 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 12 x 12 x 6 - Steel/Gray
Datasheet
3May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 12 in 6 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 12 x 12 x 8 - Steel/Gray
Datasheet
7May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 12 in 8 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 16 x 16 x 6 - Steel/Gray
Datasheet
10May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 16 in 6 in 16 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 20 x 20 x 10 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 20 in 10 in 20 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 24 x 24 x 6 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 24 in 6 in 24 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 4 x 4 x 3 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 4 in 3 in 4 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 6 x 4 x 4 - Steel/Gray
Datasheet
2May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 4 in 4 in 6 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 8 x 6 x 3 - Steel/Gray
Datasheet
1May Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 6 in 3 in 8 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover w/KO's - 10 x 10 x 4 - Galv
Datasheet
1May Stock
Min.: 1
Mult.: 1

Screw Cover Galvanized Steel 10 in 4 in 10 in Wall Mount IP20 1 UL 50 CSKOG