Product Overview
Philips 383323 PL-C 18W/835/4P/ALTO Compact Fluorescent Lamp — 18W | 5.8 in | 1,250 Lumens | 3500K Natural White | G24q-2 4-Pin Base
The Philips 383323 PL-C 18W/835/4P/ALTO is a 18W quad-tube (cluster) compact fluorescent lamp with a G24q-2 4-pin base, producing 3500K Natural White light (1,250 initial lumens) with a color rendering index (CRI) of 82 and a rated average life of 12,000 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 1,250 lm Initial lumens | Color Temp 3500K Natural White | CRI 82 | Interface G24q-2 4-Pin Base | Rated Life 12,000 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 4-pin lamp has no built-in starter and is made to run on an electronic ballast, and some electronic ballasts can dim it. A 2-pin lamp of the same wattage has a different base and is not interchangeable, so match the base and pin count to your fixture.
3500K – Natural white - balanced between warm and cool.
The lamp is listed with Philips ALTO low-mercury technology at 1.4 mg of mercury.
Detailed Product Specifications
- Brand: Philips Lighting
- Product Name: Philips 383323 PL-C 18W/835/4P/ALTO
- Philips Order Code: 38332-3
- UPC Barcode Number (GTIN-12): 046677240042
- Lamp Type: Compact fluorescent, quad tube (PL-C), 4-pin
- Lamp Wattage: 18W
- Color Temperature: 3500K, Natural White
- Color Rendering Index (CRI): 82
- Initial Lumens: 1,250 lm
- Design Lumens (at 40% of life): 1,075 lm
- Rated Average Life: 12,000 hours
- Base: G24q-2 (4-pin)
- Maximum Overall Length: 5.8 in
- Ballast: External electronic ballast required
- Mercury Content: 1.4 mg
Ballast & Fixture Compatibility
This 4-pin lamp needs an external electronic ballast rated for this wattage and lamp type; there is no built-in starter. Confirm the ballast is rated for a 18W PL-C lamp.
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: 1E595
- GE Equivalent: F18DBX/SPX35/4P (GE Part Number 12869)
- Sylvania (OSRAM) Equivalent: CF18DD/E/835 (Part Number 20672)
Before You Order – Verify
- Confirm the base: G24q-2 (4-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 (electronic).
- Confirm the fixture has room for the lamp length: 5.8 in.
- Confirm 3500K matches the lamps already installed before partial re-lamping.
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.
