Search  for anything...

Helunsi 2 Pieces Waterproof IP68 External Junction Box, 2 Way Outdoor Junction Box, Underground Plug Line Coaxial Cable Connector Wire Range 5 to 15mm Electrical Power Cord Weatherproof Boxes - Black

  • Based on 760 reviews
Condition: New
Checking for the best price...
$15.99 Why this price?
Save $2.99 was $18.98

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Sep 6
Order within 22 hours and 34 minutes
Available payment plans shown during checkout

Color: Black-2pcs


Features

  • IP68 Waterproof >>> The Helunsi outdoor junction box is of IP68 high-level waterproof class, weatherproof, moisture-proof, dust-proof and anti-UV, making it safe to use in the sun, wet environment, rainy or snowy days, provides total protection for your junction cables.
  • High-Quality Materials >>> 2 way junction box has good waterproof performance, with high quality plastic PC housing and waterproof silicone seal, which will not crack or fade in harsh environment, corrosion and high temperature resistant, durable for years use.
  • Specification >>> Pack of 2. Internal dimensions: L 2.83 x W 1.89 x H 1.26inch. External dimensions: L 5.31 x W 2.72 x H 1.38inch. One input and one output, conduit cable gland is equipped with 3 sets of silicone seals of different thicknesses, applicable cable size range: imperial units 3/16" to 11/32", 11/32" to 15/32", 15/32" to 19/32" (Metric units 5-9mm/9-12mm/12-15mm). Comes with 3 screw terminal connector and mounting kit. Maximum voltage: AC 450V. Maximum current: 24A.
  • Easy to Install >>> It can be installed under the ground or on the wall, horizontally or vertically as indoor or outdoor junction box, tightening the exterior screws with a screwdriver for a complete seal. Design for detachable box and cover, the waterproof silicone layer is precise and tight, by rotating and tightening the cable gland nut at both ends can lock and seal the cable.
  • Wide Usage >>> Our Helunsi junction box can protect the connections of outdoor electrical appliances and wiring, which is suitable for external lighting facilities requiring waterproof or weatherproof protection, street lights, irrigation machine, solar equipment, outdoor LED display, garden lights, outdoor flood lights, landscape lights, underground electrical and more.

Material: Plastic


Brand: Helunsi


Color: Black-2pcs


Style: waterproof ip68 external junction box


Finish Type: PC housing


Product Dimensions ‏ : ‎ 1.26 x 2.72 x 1.26 inches; 10.58 ounces


Item model number ‏ : ‎ outdoor junction box


Date First Available ‏ : ‎ June 20, 2019


Manufacturer ‏ : ‎ Helunsi


Country of Origin ‏ : ‎ China


Best Sellers Rank: #25,900 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #54 in Electrical Boxes


#54 in Electrical Boxes:


Customer Reviews: 4.4 4.4 out of 5 stars 760 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Pool light splice
Color: Black-1pcs
Used this to replace my pool light without pulling a new cable so it will be submerged forever. I soldered the connections and then filled the box with a pourable silicone. Normally you have to pull the old cable (mine is 100ft) out but after 20 years it is almost impossible to break it loose and pull the new one through. The best price I found was $250 for the labor. Way easier and cheaper to use this j-box but if it fails it'll ruin a $500 light. Works great so far but just installed April 2024. I'll update this if there is any problem. ... show more
Reviewed in the United States on April 15, 2024 by Average Bear

  • Very good product
Color: Black-1pcs
It was a little hard to work with but I like the features of the box
Reviewed in the United States on March 3, 2025 by Don

  • weatherproof so far.
Color: Black-1pcs
Pretty much a no brainer on how to setup and use this item. My only 2 cons would be that it is a chore to get a larger style cable (power cord) thru the sealing rings and into the box and I wish that were or was another mounting method.
Reviewed in the United States on June 11, 2023 by AZazel

  • Easy to use for wire splicing.
Color: Black-1pcs
Worked very well to splice an outdoor power cable for a septic system lift pump. The box is left above ground under a fake rock, so I have not tested the weatherproofing as well as some other applications might.
Reviewed in the United States on March 19, 2025 by William L.

  • Excellent product
Color: Black-2pcs
Had to repair Internet line to house, was cut during digging session. Worked great and is very well made.
Reviewed in the United States on May 8, 2024 by S. B. Droz

  • Perfect for splicing low-voltage wires outside
Color: Black-1pcs
I needed to cut and re-route speaker wire to a deck, there was almost no slack in the wire. This box allowed me to do a perfect in-line splice and box seems very well constructed and should protect well against the elements.
Reviewed in the United States on July 11, 2024 by AJ84

  • Great Product with Cheap Screws
Color: Black-2pcs
I needed a waterproof junction box to use in conjunction with a sprinkler control line repair. The junction box was perfect for my needs. I was impressed with the seals and overall quality of the junction box until I came to screwing the lid on the box. The manufacturer included the cheapest screws I've ever seen. One of the screws lacked slots in the head and was useless! My recommendation to the manufacturer is to get rid of the cheap screwdriver included and spend the money on higher-quality screws. ... show more
Reviewed in the United States on August 18, 2023 by Michael G Jordan

  • only fits #12 gauge wire or less
Color: Black-1pcs
would not fit my wire
Reviewed in the United States on March 3, 2025 by Jack T.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...