E-Simpo® 50-Pack CFL T8 to T5 Fluorescent Tube side cap adapter G13 to G5 tube socket adapter T8-T5 tube side cap converter, allow you install T5 28W CFL into T8 fixture (L36
DuraVent 46DVA-CFK 4" x 6-5/8" Inner Diameter Counter Flashing: Ducting Components: Amazon.com: Tools & Home Improvement
27W 6500K Four Tube Fluorescent Bulb - FML Lamp 27 Watt Light Bulb Replacement with GX10Q-4 4-Pin Base in a Square - Daylight - Quad Tube CFL 6500k High Vision Table Lamp - 1 Pack - - Amazon.com
E-Simpo® 50-Pack CFL T8 to T5 Fluorescent Tube Side Cap Adapter,T8-T5 Tube Side Cap Converter, Allow You Install T5 28W CFL into T8 Fixture (L31 for 2ft/465mm T5 Tube) - - Amazon.com