The Bridgeport 3″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.

Bridgeport NIP-4001200 Rigid Conduit Steel Threaded Nipple 4″ X 12″
https://nsiindustries.com/product/bridgeport-nip-4001200-rigid-conduit-steel-threaded-nipple-4-x-12/
The Bridgeport 4″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
The Bridgeport 4″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
The Bridgeport 2″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
The Bridgeport 1″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
Bridgeport NIP-200600 Rigid Conduit Steel Threaded Nipple 2″ X 6″
https://nsiindustries.com/product/bridgeport-nip-200600-rigid-conduit-steel-threaded-nipple-2-x-6/
The Bridgeport 2″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
Bridgeport NIP-200400 Rigid Conduit Steel Threaded Nipple 2″ X 4″
https://nsiindustries.com/product/bridgeport-nip-200400-rigid-conduit-steel-threaded-nipple-2-x-4/
The Bridgeport 2″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
The Bridgeport 1 1/4″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
Bridgeport NIP-200300 Rigid Conduit Steel Threaded Nipple 2″ X 3″
https://nsiindustries.com/product/bridgeport-nip-200300-rigid-conduit-steel-threaded-nipple-2-x-3/
The Bridgeport 2″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.
Bridgeport NIP-200800 Rigid Conduit Steel Threaded Nipple 2″ X 8″
https://nsiindustries.com/product/bridgeport-nip-200800-rigid-conduit-steel-threaded-nipple-2-x-8/
The Bridgeport 2″ Steel Conduit Nipple serves as a short raceway between two enclosures or boxes.