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General Use Project Boxes & Enclosures

Project enclosures from Polycase offer an economical solution for housing circuit boards and electronic components. Our large selection of electronic project boxes come in a variety of styles, colors, and sizes.  Molded from flame-retardant ABS plastic or high-quality aluminum, our PCB enclosures are durable and reliable to ensure your circuit board is protected. Popular styles of circuit board enclosures include handheld enclosures and key fob cases for wireless applications, desktop-style enclosures for tabletop use, potting boxes, and many more. 

Project boxes are key components for all kinds of electronics projects, from hobbyists’ DIY electronics projects to product prototypes for new business ventures. Read more about these versatile project cases and their applications below.

What to Look for in Electronics Project Box Enclosures

Project boxes are key components for all kinds of electronics projects, from hobbyists’ DIY electronics projects to product prototypes for new business ventures. As with any other type of electronics enclosure, the needs of your application will determine the required specs and features of your electronics project box enclosure. These are some of the factors to consider:

  • Materials: Both metal and plastic project boxes offer their own advantages. ABS plastic project boxes are durable and highly cost-effective, while aluminum enclosures offer additional protection and built-in protection against electrical interference.
  • Form Factor: Small electronics projects often need an electrical enclosure with a specific form factor, such as a handheld, desktop, or wall mount module. 
  • Mounting Features: Check to see if your enclosure model offers features for mounting printed circuit boards and other internal components. These can make the build process significantly faster and easier, and the final product more durable.
  • Customization Options: Since project box enclosure cases can be used for so many different applications and have connectors in so many different places, it’s important to have an easy way to customize yours with features such as machined cutouts. 

Electronics Project Cases from Polycase

Designing an Arduino device? Building a custom stereo amplifier or a homemade power supply? Looking for a durable scientific instrument case? Whatever you’re working on, Polycase offers a full range of project enclosure boxes to meet your needs. 

  • Both plastic and metal enclosures are available, made from durable materials like diecast aluminum, extruded aluminum, and ABS plastic
  • Convenient features like built-in PCB mounting bosses and wall mount flanges
  • Easy customization through our in-house CNC machining and digital printing services
  • Variety of form factors available, including handheld and snap-together models
  • Cost-effective price points for every budget

Shop all of our electrical project boxes here, using the sidebar to sort for your required characteristics and specs.

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  1. EX-50
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    EX-50 Extruded Aluminum Enclosure
    As low as $11.50 per unit
    Internal: 1.6" x 1.9" x 1.0"
    41 x 50 x 25 mm
    External: 1.9" x 2.7" x 1.3"
    49 x 69 x 35 mm
    Material: Aluminum
  2. All plastic enclosure
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    SN-20 Snap Together Enclosure
    As low as $2.29 per unit
    Internal: 1.7" x 1.1" x 0.7"
    43 x 29 x 18 mm
    External: 1.9" x 1.3" x 0.8"
    50 x 35 x 22 mm
    Material: ABS
  3. SN-20-00
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    SN-20 White Snap Together Enclosure
    As low as $2.29 per unit
    Internal: 1.7" x 1.1" x 0.7"
    43 x 29 x 18 mm
    External: 1.9" x 1.3" x 0.8"
    50 x 35 x 22 mm
    Material: ABS
  4. SN-21-01 Black indoor plastic snap together enclosure for electronics - 1.97 x 1.97 x 0.67 inches
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    SN-21 Snap Together Enclosure
    As low as $2.38 per unit
    Internal: 1.7" x 1.7" x 0.5"
    43 x 44 x 13 mm
    External: 1.9" x 1.9" x 0.6"
    50 x 50 x 17 mm
    Material: ABS
  5. SN-21-00
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    SN-21 White Snap Together Enclosure
    As low as $2.38 per unit
    Internal: 1.7" x 1.7" x 0.5"
    43 x 44 x 13 mm
    External: 1.9" x 1.9" x 0.6"
    50 x 50 x 17 mm
    Material: ABS
  6. SN-22
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    SN-22 Snap Together Enclosure
    As low as $2.96 per unit
    Internal: 1.7" x 1.7" x 0.9"
    43 x 44 x 23 mm
    External: 1.9" x 1.9" x 1.0"
    50 x 50 x 27 mm
    Material: ABS
  7. SN-22-00
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    SN-22 White Snap Together Enclosure
    As low as $2.96 per unit
    Internal: 1.7" x 1.7" x 0.9"
    43 x 44 x 23 mm
    External: 1.9" x 1.9" x 1.0"
    50 x 50 x 27 mm
    Material: ABS
  8. AL-70P
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    AL-70P Diecast Aluminum Enclosure
    As low as $3.99 per unit
    Internal: 1.7" x 1.7" x 1.1"
    44 x 44 x 28 mm
    External: 2.0" x 2.0" x 1.2"
    51 x 51 x 32 mm
    Material: Aluminum
  9. KT-35T0 Black small plastic handheld enclosure for electronics - 2.5 x 1.63 x 0.8 inches
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    KT-35 Handheld Electronics Enclosure
    As low as $1.38 per unit
    Internal: 2.2" x 1.3" x 0.6"
    57 x 35 x 15 mm
    External: 2.5" x 1.6" x 0.8"
    64 x 41 x 20 mm
    Material: ABS
  10. LP-11FMBT Black basic multi-purpose enclosure for electronics with flanges for surface mount applications and a Flush/Textured cover style - 2.5 x 2.5 x 0.9 inches
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    LP-11F Plastic Enclosures for Electronics
    As low as $1.63 per unit
    Internal: 2.2" x 2.2" x 0.8"
    56 x 56 x 20 mm
    External: 2.5" x 2.5" x 0.9"
    64 x 64 x 23 mm
    Material: ABS
  11. LP-11PMBT Black basic plastic box for electronics with a Flush/Textured cover style - 2.5 x 2.5 x 0.9 inches
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    LP-11P Plastic Enclosures for Electronics
    As low as $1.54 per unit
    Internal: 2.2" x 2.2" x 0.8"
    56 x 56 x 20 mm
    External: 2.5" x 2.5" x 0.9"
    64 x 64 x 23 mm
    Material: ABS
  12. electrical polycase enclosure

    OUTDOOR RATED ENCLOSURES

    Explore a range of weatherproof boxes rated for protection in the harshest environments

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  13. extruded aluminum enclosure
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    EX-53 Extruded Aluminum Enclosure
    As low as $17.71 per unit
    Internal: 2.4" x 3.7" x 1.0"
    61 x 94 x 25 mm
    External: 2.7" x 4.4" x 1.3"
    69 x 114 x 35 mm
    Material: Aluminum
  14. EX-56
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    EX-56 Extruded Aluminum Enclosure
    As low as $19.85 per unit
    Internal: 2.4" x 3.7" x 1.5"
    61 x 94 x 40 mm
    External: 2.7" x 4.5" x 2.0"
    69 x 115 x 52 mm
    Material: Aluminum
  15. KT-40T0 Black small plastic handheld enclosure for electronics - 2.75 x 2 x 0.8 inches
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    KT-40 Handheld PCB Enclosure
    As low as $1.58 per unit
    Internal: 2.4" x 1.7" x 0.6"
    63 x 44 x 16 mm
    External: 2.7" x 2.0" x 0.8"
    70 x 51 x 20 mm
    Material: ABS
  16. SN-23
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    SN-23 Snap Together Enclosure
    As low as $3.06 per unit
    Internal: 2.4" x 1.7" x 0.5"
    63 x 44 x 13 mm
    External: 2.7" x 1.9" x 0.6"
    70 x 50 x 17 mm
    Material: ABS
  17. SN-23-00
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    SN-23 White Snap Together Enclosure
    As low as $3.06 per unit
    Internal: 2.4" x 1.7" x 0.5"
    63 x 44 x 13 mm
    External: 2.7" x 1.9" x 0.6"
    70 x 50 x 17 mm
    Material: ABS
  18. small project box
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    SN-24 Snap Together Enclosure
    As low as $3.22 per unit
    Internal: 2.4" x 1.7" x 1.0"
    63 x 44 x 25 mm
    External: 2.7" x 1.9" x 1.1"
    70 x 50 x 29 mm
    Material: ABS
  19. SN-24-00
    Add to Compare Add to Wish List
    SN-24 White Snap Together Enclosure
    As low as $3.22 per unit
    Internal: 2.4" x 1.7" x 1.0"
    63 x 44 x 26 mm
    External: 2.7" x 1.9" x 1.1"
    70 x 50 x 29 mm
    Material: ABS
  20. SN-25
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    SN-25 Snap Together Enclosure
    As low as $3.64 per unit
    Internal: 2.4" x 1.7" x 1.5"
    63 x 44 x 38 mm
    External: 2.7" x 1.9" x 1.6"
    70 x 50 x 42 mm
    Material: ABS
  21. SN-25-00
    Add to Compare Add to Wish List
    SN-25 White Snap Together Enclosure
    As low as $3.64 per unit
    Internal: 2.4" x 1.7" x 1.4"
    63 x 44 x 38 mm
    External: 2.7" x 1.9" x 1.6"
    70 x 50 x 42 mm
    Material: ABS
  22. TS-2309F Black indoor enclosure for electronics - 3 x 2 x 0.9 inches
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    TS-2309F Plastic Electronics Enclosure
    As low as $1.20 per unit
    Internal: 2.8" x 1.8" x 0.7"
    72 x 46 x 19 mm
    External: 3.0" x 2.0" x 0.9"
    76 x 51 x 23 mm
    Material: ABS
  23. TS-2309P Black indoor enclosure for electronics - 3 x 2 x 0.9 inches
    Add to Compare Add to Wish List
    TS-2309P Plastic Electronics Enclosure
    As low as $1.20 per unit
    Internal: 2.8" x 1.8" x 0.7"
    72 x 46 x 19 mm
    External: 3.0" x 2.0" x 0.9"
    76 x 51 x 23 mm
    Material: ABS
  24. electrical polycase enclosure

    OUTDOOR RATED ENCLOSURES

    Explore a range of weatherproof boxes rated for protection in the harshest environments

    SHOP OUTDOOR ENCLOSURES

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