Plusrite 4047 PL42W/3U/4P/841 Lamp – Lighting Supply Guy
13W GX24Q 4-Pin LED PLC Lamp| Lusta LED
42 Watt Triple-Tube Fluorescent, GX24q-4 Base
2) REPLACEMENT BULBS FOR PQL PLT42/41K/GX24Q-4 4PIN 42W | eBay
42 Watt CFL Light Bulbs | 4 Pin GX24Q-4 Base 3500K Neutral White | 42W High Output 3200 Lumens | Triple Tube Compact Fluorescent Light Bulbs Plug-in | 10 Pack by GoodBulb - Walmart.com
Simply Conserve G24Q/GX24Q Vertical PL 18-Watt EQ Single tube Daylight GX24Q -4 Pin Base LED Light Bulb (20-Pack) in the General Purpose Light Bulbs department at Lowes.com