Custom Door Operator Enclosures

Door operator enclosures are the housings, covers, control boxes, and mounting plates around the motor and drive of a sliding door operator. Each one clears the drive, takes the cables, or opens for service.

Door operator housings, covers, and plates we build

We build door operator enclosures as the metalwork on a sliding door operator: housings and shrouds around the motor and drive, service covers, control boxes, and the mounting plates that carry the components inside. Parts are laser cut and formed from aluminum, carbon steel, galvanized steel, galvanneal, or stainless steel, and leave bare, powder coated, or assembled with studs, nuts, and latches installed.

Control cabinets and pedestals that stand at the opening are gate & access-control enclosures.

Open sheet metal enclosure body with a slotted flange, a separate formed cover, and a loose four-hole plate.

The plate carries the components and the cover gives access to them, so each part takes its own hole pattern. The slotted flange on the body is where the assembly mounts.

Door operator parts we make

Operator housings
Formed shells and shrouds around the motor and drive, with openings for the drive and cables.
Control boxes
Bodies and covers with slotted flanges, keyhole slots, and cable holes, mounted on the operator.
Removable covers
Service covers with the overlap and fastener holes that let them lift off.
Mounting plates
Flat plates that carry the components inside the housing, with a hole pattern for each.

What sets the fit of a housing

Drive clearance
The motor, shaft, and drive set the inside envelope. A wall or flange in that space rubs the drive.
Cover removal
A service cover has to lift off past the wall beside it. A catching overlap or fastener head leaves the operator unreachable in place.
Cable entries and the NEMA type
Every cable hole is a gap in the enclosure. The NEMA type you name sets the closure and entry hardware, and a hole that misses that hardware's size leaves the gap open.
Threads and bare surfaces
Powder film insulates and fills threads. A coated contact surface stops conducting, and a coated thread stops turning.

Housings cut flat, fitted, then coated

The body, cover, and plate are laid out together, so the holes that join them line up after the bends.

  1. Laser cut

    We laser cut the body, cover, and plate flat, with the keyholes, slots, and cable holes in place.

  2. Form and install hardware

    We form the flanges and cover overlap, then install studs, nuts, and latches in the bare parts.

  3. Mask, coat, and assemble

    We mask the threads and the surfaces you mark bare, powder coat, and assemble the cover and plate on the body.

Keep the hand-chain path clear

On an operator equipped for manual chain operation, the chain must remain reachable with the housing fitted. Both strands also need a clear path through the enclosure opening; a nearby mounting bracket or folded edge can obstruct the chain even when the hanging loop is easy to reach.

Review the installed arrangement with the cover closed and the chain in its operating path. The selected operator’s instructions determine chain routing and any engagement controls; coordinate the housing opening and surrounding metalwork around that arrangement.

Closed operator housing beside an overhead door header, with a hand-chain loop descending through an orange-edged underside opening. An orange arrow marks chain travel clear of the jamb.

Both chain strands pass through the housing with its cover closed. Locating that opening around the operator's chain route keeps the folded edge and nearby mounting metalwork out of the manual operating path.

What to send for a door operator enclosure quote

Operator and component model
STEP or DXF plus a PDF, with the drive and controls placed.
Cover and cable entries
Removal direction, hole positions and sizes, and gasket detail.
Environment
Installation location and the NEMA type your design names.
Material and finish
Alloy, thickness, powder product, color, and the surfaces that stay bare.
Hardware and quantity
Stud, nut, and latch part numbers, quantity, and delivery date.
Request a quote