Flush-mounted cleanroom junction box with flat stainless access cover

Cleanroom Lighting and Electrical Equipment

Flush-Mounted Junction Box

A recessed wiring enclosure with a flat removable cover that keeps splices accessible without a projecting industrial box.

Flush Removable Cover
Concealed Perimeter Seal
Captive Countersunk Screws
Sealed Internal Cable Entries

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Product Introduction

The junction box sits inside the cleanroom wall panel and presents only a flat stainless access cover to the room. A continuous gasket seals the cover to the recessed frame and countersunk captive screws distribute compression around the edge. Internal DIN rail, terminals and cable glands organize branch wiring while remaining outside the primary cleaning surface.

Key Features

The cover aligns closely with the wall plane and eliminates a projecting enclosure.

Captive screws remain attached during electrical access.

A continuous seal prevents the wall cavity from opening into the room.

Internal earth studs and terminal rail provide an organized bonding point.

Rear and side gland plates route cables without field-cut openings in the face.

Customer Product Concerns

Electrical splices require future access, but a removable panel can compromise wall integrity if its cover and cable routes are not sealed.

A surface junction box creates a large top ledge.The enclosure recesses fully behind a flush access plate.

Loose cover screws fall into the controlled room.Captive countersunk fasteners remain retained in the plate.

Unsealed cable holes connect the room to the wall cavity.Matched glands close each conductor route inside the back box.

Mixed splices make troubleshooting slow and error prone.Labeled DIN terminals and earth studs organize each circuit.

Typical Applications

Cleanroom lighting branchesInstrumentation splicesAccess-control wiringWall-panel service distribution

Technical Parameters

Typical configurable construction ranges for a flush-mounted junction box are listed below.

Core Material	SUS304 or SUS316L cover and frame with galvanized or stainless recessed box, DIN rail and terminal blocks
Panel Thickness	1.5-3.0 mm flush access-cover thickness
Effective Width	150-600 mm clear internal box width
Maximum Length	Up to 800 mm overall recessed enclosure height
Steel Facing Thickness	1.5-2.0 mm cover; 1.0-1.5 mm recessed box
Core Density	Approximately 7900-8000 kg/m³ for the stainless cover and frame
Thermal Conductivity	14-16 W/(m·K) for the stainless access plate
Surface Finish	Fine-brushed or electropolished flush stainless cover with engraved circuit reference
Joint Type	Gasketed recessed frame with captive countersunk cover screws and gland-sealed rear entries
Customization	Available based on the intended application and operating environment.

Available Options

Blank box or fitted DIN terminalsSquare or rectangular coverQuarter-turn latches or captive screwsStainless or galvanized rear enclosure

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