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The UpgradeToLED 4-Inch Square Base Tenon Adapter is engineered to provide a secure and dependable mounting platform for LED parking lot lights, shoebox fixtures, area lights, flood lights, and roadway lighting installed on 4-inch square steel poles. Designed for commercial and industrial lighting projects, this adapter converts the top of a square pole into a standard 2-3/8-inch O.D. vertical tenon, allowing compatibility with most slip-fitter and tenon-mounted LED fixtures.
Constructed from heavy-duty steel with a weather-resistant powder-coated finish, this adapter is built to withstand rain, snow, UV exposure, corrosion, and other harsh outdoor conditions. Its precision-machined design ensures exceptional structural strength while simplifying both new installations and retrofit lighting upgrades.
Whether you're upgrading a parking lot, commercial property, industrial facility, school campus, or municipal roadway, the UpgradeToLED 4-Inch Square Base Tenon Adapter provides a reliable, professional-grade mounting solution designed for years of dependable outdoor performance.
| Specification | Details |
|---|---|
| Brand | UpgradeToLED |
| Product Type | Square Base Tenon Adapter |
| Pole Compatibility | 4-Inch Square Pole |
| Tenon Size | 2-3/8-Inch O.D. Vertical Tenon |
| Construction | Heavy-Duty Steel |
| Finish | Corrosion-Resistant Powder-Coated Finish |
| Mounting Style | Pole Top Vertical Tenon |
| Fixture Compatibility | LED Parking Lot Lights, Shoebox Lights, Area Lights, Flood Lights, Street Lights |
| Weather Rating | Outdoor Rated |
| Corrosion Resistant | Yes |
| Installation | Pole Top Mount |
Ideal for:
The UpgradeToLED 4-Inch Square Base Tenon Adapter is designed for contractors, electricians, and facility managers who require a durable and dependable outdoor mounting solution. Its heavy-duty steel construction, corrosion-resistant finish, and compatibility with industry-standard 2-3/8-inch tenon-mounted fixtures make it an excellent choice for commercial outdoor LED lighting installations.
At UpgradeToLED, we keep shipping simple and affordable.
Orders over $99 (before tax) ship free within the United States.
Orders under $99 ship at a flat rate of $9.95.
Orders are processed within 1 business day.
Standard delivery takes about 3–4 business days depending on your location.
If you need to cancel or update an order, please contact us right away:
Phone: 706-380-2070
Email: support@upgradetoled.com
Once an order has shipped, changes are no longer possible.
Please check your order as soon as it arrives.
If items are damaged or missing, contact us within 7 days of delivery so we can resolve it quickly.
UpgradeToLED
Phone: 706-380-2070
Email: support@upgradetoled.com
Address: 1280 Livingston Trail, Bogart, GA 30622, USA
Business hours: Monday–Friday, 5:00 am – 5:00 pm EST
At UpgradeToLED, we want you to be fully satisfied with your purchase. If you are not, we make the return and exchange process simple and straightforward.
You may request a return within 30 days of purchase by contacting us at 706-380-2070 or support@upgradetoled.com.
Once your request is approved, you will receive a Return Merchandise Authorization (RMA) number and a prepaid return label to download and print.
Send your return item(s) to:
UpgradeToLED Returns
1280 Livingston Trail
Bogart, GA 30622
United States
Once your return is received and inspected, we will process your refund or exchange in line with our policies. Refunds are usually issued to your original payment method within 5 business days.
All returned products must be new, unused, and in their original packaging.
A 15% restocking fee applies to returns that are missing original packaging or are not in new condition.
We accept exchanges within 30 days of purchase. Please request an RMA when arranging the exchange. A replacement item will be shipped once your return has been received and inspected.
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