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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Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 10 x 8 x 4 - Steel/Gray
Datasheet
1In Stock
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 8 in 4 in 10 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes Type 3R Hinge Cover - 12 x 10 x 6 - Steel/Gray
Datasheet
3In Stock
Min.: 1
Mult.: 1

Hinged Snap Latch Door Galvanized Steel Gray 10 in 6 in 12 in Screw IP24 3R UL 50 C3RHCRSM
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 8 x 6 x 4 - Steel/Gray
Datasheet
21In Stock
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 6 in 4 in 8 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 12 x 10 x 4 - Steel/Gray
Datasheet
1In Stock
Min.: 1
Mult.: 1

Hinged Door Steel Gray 10 in 4 in 12 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 8 x 6 x 4 - Steel/Gray
Datasheet
1In Stock
Min.: 1
Mult.: 1

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

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

Screw Cover Steel Gray 10 in 6 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 18 x 14 x 3 - Steel/Gray
Datasheet
1In Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 14 in 3 in 18 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 6 x 6 x 3 - Steel/Gray
Datasheet
3In Stock
Min.: 1
Mult.: 1

Screw Cover Steel Gray 6 in 3 in 6 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover w/KO's - 12 x 12 x 6 - Galv
Datasheet
1In Stock
Min.: 1
Mult.: 1

Screw Cover Galvanized Steel 12 in 6 in 12 in Wall Mount IP20 1 UL 50 CSKOG
Hammond Manufacturing Junction Boxes N1 Screw Cover - 12 x 8 x 4 - Steel/Gray
Datasheet
3Expected 9/1/2026
Min.: 1
Mult.: 1

Screw Cover Steel Gray 8 in 4 in 12 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 6 x 6 x 4 - Steel/Gray
Datasheet
35Expected 8/26/2026
Min.: 1
Mult.: 1

Screw Cover Steel Gray 6 in 4 in 6 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 6 x 6 x 6 - Steel/Gray
Datasheet
3Expected 8/26/2026
Min.: 1
Mult.: 1

Screw Cover Steel Gray 6 in 6 in 6 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover w/KO's - 10 x 10 x 6 - Galv
Datasheet
2Expected 9/2/2026
Min.: 1
Mult.: 1

Screw Cover Galvanized Steel 10 in 6 in 10 in Wall Mount IP20 1 UL 50 CSKOG
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 24 x 24 x 12 - Steel/Gray
Datasheet
More Info Available

Lift-Off Cover Galvanized Steel Gray 24 in 12 in 24 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes N1 Screw Cover - 24 x 24 x 8 - Steel/Gray
Datasheet
More Info Available

Screw Cover Steel Gray 24 in 8 in 24 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 36 x 36 x 12 - Steel/Gray
Datasheet
More Info Available

Screw Cover Steel Gray 36 in 12 in 36 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes Type 3R Hinge Cover - 12 x 12 x 10 - Steel/Gray
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Hinged Snap Latch Door Galvanized Steel Gray 12 in 10 in 12 in Screw IP24 3R UL 50 C3RHCRSM
Hammond Manufacturing Junction Boxes Type 3R Hinge Cover - 12 x 12 x 6 - Steel/Gray
Datasheet
1,356Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Hinged Snap Latch Door Galvanized Steel Gray 12 in 6 in 12 in Screw IP24 3R UL 50 C3RHCRSM
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 12 x 8 x 6 - Steel/Gray
Datasheet
58Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 8 in 6 in 12 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes Type 3R Screw Cover - 18 x 12 x 8 - Steel/Gray
Datasheet
104Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Lift-Off Cover Galvanized Steel Gray 12 in 8 in 18 in Wall Mount IP24 3R UL 50 C3RSC
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 12 x 8 x 4 - Steel/Gray
Datasheet
58Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Hinged Door Steel Gray 8 in 4 in 12 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Hinge Cover w/KO's - 16 x 16 x 6 - Steel/Gray
Datasheet
1,057Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Hinged Door Steel Gray 16 in 6 in 16 in Wall Mount IP20 1 UL 50 CHKO
Hammond Manufacturing Junction Boxes N1 Screw Cover - 16 x 12 x 4 - Steel/Gray
Datasheet
126Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Screw Cover Steel Gray 12 in 4 in 16 in Wall Mount IP20 1 UL 50 CS
Hammond Manufacturing Junction Boxes N1 Screw Cover - 16 x 12 x 6 - Steel/Gray
Datasheet
231Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Screw Cover Steel Gray 12 in 6 in 16 in Wall Mount IP20 1 UL 50 CS