Plastic & Fiberglass Boxes

Plastic and fiberglass boxes provide enclosed locations for wiring, controls, and related electrical components. Common commercial uses include housing control components, supporting panel-related installations, organizing enclosed equipment, and protecting electrical components where water, dust, or corrosive-environment exposure is a concern.

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Helpful Buying Guide

Choose a plastic or fiberglass box for your electrical enclosure layout

The products represented in this category include fiberglass electrical enclosures, wall-mount enclosures, and a clear-cover junction box. Compare how you need to access and view enclosed components, whether you need a wall-mount format, where openings must be placed, and the mounting features needed for your installation.

Visual Guide

Popular examples in this category

Use Cases

House controls, wiring, and components

Use these boxes to create an enclosed location for controls, related components, wiring, or panel-related electrical box installations.

How to Choose

Match access and layout needs

Choose between clear or solid covers, quick-release latches or cover screws, and enclosures with no preformed openings when you need to place openings during installation.

Applications

Consider exposed and corrosive locations

Gasketed and sealed designs help protect enclosed contents from water and dust. Fiberglass construction offers chemical, temperature, and weather resistance qualities for corrosive environments.

Additional Info

Review mounting and enclosure details

Available details include wall-mount formats, mounting hardware, mounting studs for compatible optional panels and terminal block kits, data pockets, ground studs, and padlock provisions.

ClearCover options

Clear covers and viewing windows allow checks without opening the enclosure.

GasketedSealed designs

Gaskets and sealed seams help protect against water and dust.

No preformed holesConfigurable layouts

Select fiberglass bodies can be modified during installation.

Wall-mountInstallation format

Wall-mount models provide a dedicated location for controls and components.

Comparison Guide

Compare the represented enclosure types

Use this overview to focus on the features that change how the enclosure is viewed, accessed, mounted, or configured.

Product typeAccess and viewingInstallation and enclosure details
Fiberglass enclosure with window and quick-release latchesViewing window and quick-release corner latchesGasketed cover, compression-molded fiberglass, and padlock provisions
Wall-mount fiberglass enclosureSealed cover for protected contentsNo preformed holes or knockouts; modifiable body; select models include data pockets and mounting studs
QLINE junction box with clear coverClear cover allows viewing without removalSupports the listed QLINE I 160 x 160 mm arrangement and fits the listed 200 x 200 mm steel/zinc panel
Gasket-seal or sealed-cover electrical enclosureGasketed or sealed cover; some use semi-flush cover screwsSelect models include a ground stud and mounting hardware
Planning Guide

Plan the right fit before choosing

Plan the enclosure function

Start with what the box needs to house

Identify whether the installation is intended for controls, wiring, related electrical components, or a panel-related enclosure arrangement. Confirm the available enclosure space and the component layout before selecting a box.

  • A listed compact enclosure measures 11.5 x 12 x 8 inches.
  • One wall-mount enclosure is listed at 30.25 x 24.25 x 8 inches.
  • The QLINE junction box supports the listed QLINE I 160 x 160 mm panel arrangement and fits the listed 200 x 200 mm steel/zinc panel.
Choose access and visibility

Compare solid, clear, and windowed cover options

A clear cover or viewing window allows users to view the enclosed area or equipment without opening the cover. Solid-cover fiberglass enclosures provide protected access with gasketed designs, while quick-release corner latches support unobstructed access to the interior.

  • Clear covers allow viewing while the cover remains in place.
  • Viewing windows support visual checks of enclosed equipment.
  • Continuous hinged covers remain attached while allowing removal when needed.
  • Semi-flush cover screws secure certain covers at the top and bottom edges.
Match protection and installation features

Review sealing, modification, and mounting provisions

For installations where water and dust exposure are concerns, compare gasketed covers, foam-in-place gaskets, and sealed seams. Several fiberglass wall-mount enclosures have no preformed holes or knockouts and can be punched, drilled, filed, or sawed to suit the installation.

  • Sealed seams and gaskets help maintain water-tight and dust-tight closures.
  • Fiberglass-reinforced or compression-molded fiberglass offers chemical and temperature resistance qualities.
  • Panel and terminal-block mounting studs support compatible optional panels and terminal block kits.
  • Ground studs provide designated grounding connection points in select enclosures.
FAQ

Common questions before buying

What is the advantage of a clear cover or viewing window?

A clear cover or viewing window allows users to view the enclosed area or equipment without opening the cover.

Which boxes can be modified for installation openings?

Select fiberglass wall-mount enclosures have no preformed holes or knockouts and can be punched, drilled, filed, or sawed during installation.

How do these enclosures help with water and dust exposure?

Gasketed covers, foam-in-place gaskets, and sealed seams help create or maintain water-tight and dust-tight enclosure seals.

What mounting features are available?

Available features include wall-mount formats, included mounting hardware, mounting brackets, panel and terminal-block mounting studs, and ground studs on select enclosures.