T10 4.0W 225MM (E26 Base)

$13.2 ~~$20~~ In stock

The 120V EmeryAllen T10 retrofit lamp is an energy-efficient alternative to incandescent E26 base lamps. It offers similar light output to a 120V, 40W incandescent (300lm) and is suitable for use in 120V E26 fixtures that have ample room.

Lightbulbs are drop-shipped directly from the manufacturer, Emery Allen, and are final sale - no returns or exchanges.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy

If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy

Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy

Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Henry J. ★★★★★ Oct 18, 2026

The light output at 300 lumens is perfect for my desk lamp, and the 4.0W draw makes me feel a bit better about leaving it on all day. It's noticeably cooler to the touch than the old incandescent bulb I replaced.

Scarlett P. ★★★★★ Oct 17, 2026

Swapped out an old 40W bulb in my hallway fixture for this 4W LED and honestly can't tell the difference in brightness. The 300 lumens are spot-on for the space, and it's nice knowing I'm using a fraction of the energy.

Leo ★★★★★ Oct 13, 2026

I was skeptical a 4W LED could replace the 40W bulb in my reading lamp, but the 300lm output is honestly just as bright. The E26 base screwed right in and it stays cool even after hours of use.