Can these be painted?

It can be painted, you will need to use a paint suitable for vinyl material. The first time I tried I didn’t use the correct paint and it peeled off within a couple months.

Can this be mounted over an existing junction box?

This j block is meant for vinyl siding mount to what's behind the siding. The block is the electrical box

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WHITE UNIVERSAL J-BLOCK UNIBLOCK PW

Product ID: 303018378

Details

Connector Type
Screw
Number Of Contacts
1
Mounting Type
Inside Mount
Material
vinyl
Color
White
Brand
Alcoa Home

⚡Supports up to 250V voltage

📏8.19" x 8.19" surface dimensions

🔧Adjustable J-Channel 1/2" to 1-1/4"

5241F

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Description

⚡ Elevate your exterior game with the ultimate universal J-Block!

DURABLE VINYL BUILD - Crafted from high-quality vinyl for long-lasting weather resistance and minimal maintenance.
COMPACT LIGHTWEIGHT - Slim 8.19" square design weighing just 6.7 ounces for easy handling and installation.
POWER READY PERFORMANCE - Rated for 250 volts, ideal for reliable electrical connections in any setup.
PRECISION FIT EVERY TIME - Universal J-Block with adjustable J-Channel ensures seamless installation and perfect alignment.
VERSATILE MOUNTING OPTIONS - Supports both inside and surface mounting to suit diverse project needs.

The WHITE UNIVERSAL J-BLOCK UNIBLOCK PW by Alcoa Home Exteriors is a versatile, durable vinyl connector block measuring 8.19" square. Featuring an adjustable J-Channel (1/2" to 1-1/4"), it supports 250 volts and offers both inside and surface mounting options, making it a reliable choice for professional-grade exterior electrical installations.

Specifications

Connector Type	Screw
Number Of Contacts	1
Mounting Type	Inside Mount,Surface
Material	vinyl
Color	White
Brand	Alcoa Home Exteriors
Voltage	250 Volts
Number Of Poles	1
Product Dimensions	8.19"W x 8.19"H
Centerline Length	8.19 Inches
Manufacturer	Alcoa Home Exteriors
UPC	723605946961
Part Number	UNIBLOCK PW
Item Weight	6.7 ounces
Item model number	UNIBLOCK PW
Size	Pack of 1
Item Package Quantity	1
Measurement System	Imperial
Batteries Included?	No
Batteries Required?	No

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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5241F

Duties & taxes included

In stock

Sold byAmazon French PolynesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to French Polynesia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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