| _ T12: 12/8" T8: 8/8" T5: 5/8" The Shrinking Fluorescent

| _ Lamp Physics T5 Smaller diameter lamp has less surface area than T8. T5....2*pi*r*h = 2 * 3.14 *.313" * = 87 sq in Dissipate 238 watts in 4 lamps. T8....2*pi*r*h = 2 * 3.14 *.50" * = 145 sq in Dissipates 225 watts in 6 lamps, therefore operates cooler. T8 T5 T8 is 8/8ths or 1 inch wide T5 is 5/8 inches wide 2 shorter MJS

| _ Optimal Lamp Performance

| _ T8 Fixture T5 Fixture T5 vs. T8 Luminaires Reduced Material Costs Superior Optical Control

| _ T5 Applications General Indirect Suspended Fixtures Direct/Indirect Lay-in Fixtures Smaller Design Alternative to 2 x 4 Parabolic Direct Fixtures: 3 or 6 Wide by 2, 3, 4 or 5 Long Retrofit Kit for Existing 2 x 4 Parabolic High bay lighting - replacing HID.

| _ Lamp Efficacy vs. Diameter T T8SPX T5/HO T8SP CW/WM CW DiameterLumens/WattWattsLumens

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| _ GE now offers a 25W 4 T8 lamp for customers who need to create the lowest wattage system with 4 T8 lamps. The 25W lamp provides lower system lumen output than other 4 T8 lamps, but this is an acceptable compromise for applications where lumen output is not critical or where energy savings is more important. What Is It? Product Features: Reduce energy costs over 43% vs T12 Reduce energy costs over 18% vs T8 TCLP compliant 25 Watts 2400 initial lumens Rated Life: - 36,000 hrs / 40,000 hrs IS 3hr / 12hr - 40,000 hrs / 46,000 hrs PRS 3hr / 12hr F32T8 / 25 Watt Lamps 25 Watt 4 T8 LOW WATTAGE SYSTEMS PCDescription 72128F32T8/25W/SPX30/ECO 72129F32T8/25W/SPX35/ECO 72130F32T8/25W/SPX41/ECO 72131F32T8/25W/SPX50/ECO

| _ F32T8/WM /XL Key Messages and Benefit Comparisons a. F28 vs. F25 W Shows the lamp that provides the highest lumens per watt without significant lumen sacrifice… Description Watts Initial Lumens Mean Lumens (Design) Lumens Per Watt (LPW) CRI 3hrs/start 12hrs/start GE F32T8/25W F28T F34SP35/W M F32T8/S P GE …the GE F28T8 *Specifications from online catalogs 4/2005

| _ F34SP35/W M Key Messages and Benefit Comparisons a. F28 vs. F25 Initial Lumens: -13% vs. GE F28T8 -14% vs. F32T8 & WM -19% vs. F32T8/SPX hrs/start: -14% vs. GE XL (SP/SPX, WM, HL) -31% vs. F32T8/SXL Initial Lumen Comparison w T1232w T830w XL T8 28w T8 25w T8 13% Less Light *Based on published nominal initial lamp lumen data

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| _ T8 vs. T5 Ceiling Uniformity Comparisons Fixture Spacing Initial Foot-candles Maintained Foot-candles Ceiling Uniformity 10' :1 12' :1 15' :1 T8 T5 *Note: IES recommends a max 8:1 ratio to meet RP1 *Note: Numbers based on T5 fixture: LDM1-1 and T8 fixture LSX

| _ T8 vs. T5 Ceiling Spacing Comparison T8 FIXTURES 10 O.C. 216 LINEAR FEET 1.32 W/FT 2 T5 HO FIXTURES 15 O.C. 144 LINEAR FEET 0.89 W/FT 2 Note: This comparison was made based on the performance of the fixtures listed above. LSX LDM1-1

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| _ UltraStart TM Ballast for T5 and T8 Fluorescent Lamps Overview What is it Programmed Start electronic ballasts - PS Extends lamp life in frequently switched applications Ideal for occupancy sensors and daylight harvesting Maintains lamp warranty Who is the Target Audience Retail Industrial Warehouse Commercial

| _ Maintain lamp life when customers are using automatic light controls NEMA recommends PS in applications of 5 or more starts per day. This was based on a 2004 recommendation acknowledging that Program Start ballast were not energy efficient and were series wired and slow start. Frequent Switching Effect

| _ Warranty for lamps on GE Electronic Ballast UltraStart System with GE T5 or T8 lamp on a burning cycle of 15 minutes or more per start. Occupancy Sensors equal GE UltraStart! GE UltraMax or ProLine Instant- Start System on a burning cycle of 10 hours or more per start 10:00 00:15

| _ UltraStart TM Ballast for T5 and T8 Fluorescent Lamps Overview Why? Maintain lamp life when customers are using automatic light controls NEMA recommends PS in applications of 5 or more starts per day UltraStart is highly energy efficient and has the convenience of parallel start Customers are more satisfied when lamp life is not compromised

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| _ T5 LAMPS SMALLER IN DIAMETER SMALLER LUMINARES GLARE ISSUE ONLY INDIRECT FIXTURES MORE EXPENSIVE LAMP 2 LAMPS MORE THAN 3 T8s MORE EXPENSIVE FIXTURE MAY REDUCE FIXTURE # COST IS COMING DOWN MORE EXPENSIVE BALLAST BEST PERFORMANCE 95 F ALWAYS PROGRAMMED START T8 LAMPS MORE COMMON LESS WARM UP TIMIE MORE FIXTURE OPTIONS MORE BALLAST OPTIONS LESS EXPENSIVE TO MAINTAIN MORE RETROFIT OPTIONS BEST PERFORMANCE 77 F MORE MATERIAL=MORE WASTE MORE DIMMING OPTIONS