- Brand: Sonic Electric
- Part #: 4SE
4S Extension Ring 1-1/2" Deep Square, Welded with MKO
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4S Extension Ring 1-1/2" Deep Square, Welded with MKO
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Ships in 1-3 Business Days
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Product Details
Description
Expand your electrical capacity with this Heavy-Duty Electrical Box Extension, offering 43.0 cubic inches of added space—perfect for accommodating complex wiring layouts and increased wire volume. Built from 16-gauge welded sheet steel with a corrosion-resistant galvanized finish, it’s ideal for residential, commercial, and industrial use.
Key Features:
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Expanded Capacity: Adds 43.0 cu in of wiring space for demanding installations
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Material: 16 GA welded sheet steel for lasting strength
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Finish: Galvanized coating for corrosion resistance in any environment
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Knockouts: Includes both 1/2" and 3/4" KOs for flexible conduit entry
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Installation: Equipped with combination Phillips/slotted screws for easy mounting
Built to Handle More. Designed to Last.
This extension box is a reliable upgrade for projects requiring additional space and long-term performance.
UL Listed
Certified to meet UL standards for safe, code-compliant electrical installations.
Dimensions
Width: 4"
Height: 4"
Depth: 1-1/2"
Cubic Inches: 21 cu. in.
Specifications
Material: 16 GA Sheet Steel
Manufacturing Process: Welded
Finish: Galvanized
Customer Reviews
FAQS
Is this product in stock?
Inventory is updated regularly, but availability may change. Contact us for current stock on large orders.
How quickly will my order ship?
Most in-stock orders are processed within 1–3 business days. Standard shipping typically takes 1–5 business days, depending on your location.
Can I return this product?
Yes. Most products can be returned within 30 days of your order date, provided they are new and unused. Some exclusions and conditions apply. Please review our Return Policy for complete details.
Are there restocking fees?
Yes. A 30% restocking fee applies to eligible returns. Original shipping charges are non-refundable, and customers are responsible for return shipping costs. The restocking fee can be waived with a new order.
Is this product UL Listed or ETL Listed?
Certifications vary by product. Please review the product specifications or contact us to confirm certification details.
Does this item include a manufacturer warranty?
Most products are covered by the manufacturer's warranty. Warranty terms and coverage vary by brand and product.
Do you offer contractor pricing?
Yes. All products already include contractor pricing. Select a multi-pack option to save up to 10%. Your discount is automatically applied when you choose a qualifying multi-pack quantity.
Can I request bulk pricing?
Yes. Use the Add to Quote option on any product page to request a custom quote, or contact us directly for volume pricing and project-specific quotes.
We'll get back to you as soon as possible, within 24 hours on weekdays.
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Expert Support, Anytime
Our team is ready to assist you via chat, email hello@sonicelectric.com or phone (323) 934-3744 with product information and technical guidance.
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Shipping Information
Orders ship in 1-3 business days with tracking provided within 72 hours. Shipping Policy
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Returns & Exchanges
Non-defective items may be returned within 30 days with a 30% restocking fee waived when you place a replacement order. Shipping costs are non-refundable, and return shipping is the customer’s responsibility. Return Policy
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