Product Overview
Philips 38318-2 PL-C 18W/835/ALTO Compact Fluorescent Lamp — 18W | 6.0 in | 1,200 Lumens | 3500K Natural White | G24d-2 2-Pin Base
The Philips 38318-2 PL-C 18W/835/ALTO is a 18W quad-tube (cluster) compact fluorescent lamp with a G24d-2 2-pin base, producing 3500K Natural White light (1,200 initial lumens) with a color rendering index (CRI) of 82 and a rated average life of 10,000 hours. It is a plug-in lamp, not a screw-in bulb: it needs a fixture with a compatible ballast.
Power 18W Compact Fluorescent | Brightness 1,200 lm Initial lumens | Color Temp 3500K Natural White | CRI 82 | Interface G24d-2 2-Pin Base | Rated Life 10,000 h Average rated |
ADL Supply Expert Application & Replacement Guide
Plug-in compact fluorescent lamps like this one are used in recessed downlights, wall sconces, wall washers and other compact commercial fixtures in offices, hallways, healthcare, schools and retail spaces. Because the lamp is not self-ballasted, the fixture must contain a ballast that matches the lamp.
A 2-pin lamp has a starter built into its base and is made for a magnetic (preheat) ballast. A 4-pin lamp has no built-in starter and is made for an electronic ballast, and some electronic ballasts can dim it. The two types are not interchangeable, so match the base and pin count to your fixture.
3500K – Natural white - balanced between warm and cool.
Detailed Product Specifications
- Brand: Philips Lighting
- Product Name: Philips 38318-2 PL-C 18W/835/ALTO
- Philips Order Code: 38318-2
- UPC Barcode Number (GTIN-12): 046677111632
- Lamp Type: Compact fluorescent, quad tube (PL-C), 2-pin
- Lamp Wattage: 18W
- Color Temperature: 3500K, Natural White
- Color Rendering Index (CRI): 82
- Initial Lumens: 1,200 lm
- Design Lumens (at 40% of life): 1,070 lm
- Rated Average Life: 10,000 hours
- Base: G24d-2 (2-pin)
- Maximum Overall Length: 6.0 in (150.4 mm)
- Ballast: External magnetic (preheat) ballast; starter built into lamp
- Dimmable: No
Ballast & Fixture Compatibility
This 2-pin lamp needs an external magnetic (preheat) ballast; the starter is built into the lamp base. It is not for use on an electronic ballast. Confirm the ballast is rated for a 18W PL-C lamp.
Dimming: No.
Equivalent Lamps & Cross-Reference
If you know this lamp by another brand's number, or need a replacement, use the numbers below. Confirm that the wattage, color temperature, and ballast type match your fixture before substituting, since ratings can differ between brands.
- Grainger Item Number: 2D039
- GE Equivalent: F18DBXT4/SPX35 (GE Part Number 12863)
- Sylvania (OSRAM) Equivalent: CF18DD/835 (Part Number 20677)
Before You Order – Verify
- Confirm the base: G24d-2 (2-pin). Lamps of the same wattage with a different base or pin count will not fit the socket.
- Confirm the ballast is rated for a 18W lamp of this type (magnetic preheat).
- Confirm the fixture has room for the lamp length: 6.0 in (150.4 mm).
- Confirm 3500K matches the lamps already installed before partial re-lamping.
- Shipping restriction noted on the previous listing: Due to strict regional environmental and mercury regulations, this fluorescent product cannot be shipped to residential or commercial destinations inside CA, CO, HI, ME, MN, OR, RI, or VT.
Bulk Commercial Lighting Supply & Project Support
ADL Supply delivers commercial-volume fulfillment, tiered contractor pricing, and full pallet project quoting to electrical accounts across the United States.
For wholesale inquiries, volume pricing, or manufacturer spec sheet documentation, call our commercial branch at 1-800-235-3489.
