38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate

Product code: BLA423
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38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
38.1mm Clear Viewport Plug (41.2mm Head) | Polycarbonate
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 249 £1.12 £1.35
250 - 499 £1.04 £1.25
500 - 999 £0.87 £1.04
1000 - 2499 £0.78 £0.93
2500 + £0.69 £0.83
£1.35 / each
Quantity:


Product Specification
Mounting Hole Diameter 38.1mm
Panel Thickness 3.2mm
Material Polycarbonate
Head Diameter 41.2mm
Overall Height 11.5mm
Colour Clear

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

Larger Order?

Call our sales team on

01233 713581


Frequently Bought Together

Total Price: £0.00

38.1mm Clear Viewport Window Plug | 3.2mm Panel | Polycarbonate

Offering a simple way to inspect internal equipment without disturbing the enclosure, this polycarbonate inspection window is made from clear Polycarbonate to suit a 38.1mm mounting hole and 3.2mm panel thickness. It provides a clear viewing point for enclosed components while giving the panel opening a clean, protected finish.

The design is well suited to repeatable panel builds where a consistent snap-fit inspection point is required across multiple assemblies. The 41.2mm head diameter and 11.5mm overall height make it suitable for accurately finished panel work where visibility, fit and practical protection all matter.

What Are Viewport Window Plugs?

Viewport window plugs are transparent panel inserts that close an aperture while still allowing internal visibility. They are used where engineers need to view indicators, fuses or internal features without opening the enclosure. Manufactured from clear polycarbonate, these inspection plugs are commonly used in equipment housings, control panels and machinery enclosures where passive visual monitoring is required.

Common Applications

  • Heavy equipment covers with larger inspection apertures
  • Process machinery panels where status needs to be visible
  • Manufactured housings requiring clean round viewport inserts
  • Cabinet panels used across industrial maintenance settings

38.1mm Clear Viewport Window Plug Dimensions

  • Mounting Hole Diameter: 38.1mm
  • Panel Thickness: 3.2mm
  • Head Diameter: 41.2mm
  • Overall Height: 11.5mm
  • Colour: Clear
  • Material: Polycarbonate

Inspection and Panel Protection

This viewport window plug helps reduce unnecessary panel opening by giving technicians a visible inspection point for internal equipment. The snap-fit design supports quick installation in prepared holes, making it suitable for production builds, control cabinet assembly and maintenance replacements.

View our full Viewport Window Plugs range.

Product Support and Trade Orders

If you are matching viewport plugs to a live panel build or need support with bulk quantities, contact the Vital Parts team on 01233 713581. Our team can help confirm the key dimensions before ordering.

Please call for any enquiries!
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