CLEARANCE Use with ballast S54 HPS (High Pressure Sodium) long life 100W (watt) bulb/lamp with E26 medium base. Only use in 100 watt high pressure sodium vapor lighting fixtures. Typical uses are outdoor lighting, lamp posts, floods, wall sconces, parking or barn floods. Do not interchange wattages. Electric discharge arc tube lamp. Bulb shape ED-17, MOL (length) 5-3/8" (138mm), 24000 hours average life, warm-up time 2-4 minutes, clear glass, 9500 lumens, color temperature 2100K. Brand: Hikari High quality certified manufacturer. Warning: These lamps must be operated in fixtures designed for use with high pressure sodium lamps. The wattage rating of the fixture must match the wattage of the bulb for safety reasons. Replacement cross-reference: LU100M use with ballast S54 Availability: gone when listing sells out -------------------------- Please contact us with any questions prior to ordering. Items are stored in a temperature controlled, smoke free warehouse. Ships with packing list that shows pricing. Handling Time is same business day if before carrier pickup, cut-off time is 2:00pm CST, however, it is possible orders after cut-off ship same day depending on what time carrier pickup occurs. All orders receive a tracking code and ship from Illinois. Same day shipping is a best effort, not guaranteed, due to carriers sometimes arriving unusually early for pickup, we have no control over shipping carrier operations. Situations easily fixable by contacting us for help... 1) Shipping damage; contact us with photo(s) of the damage, then we can work on resolving the situation. 2) Order pulled wrong; contact us with the UPC or part number of what you did receive. 3) Defectives are very rare and handled as warranty by manufacturer, supplier or seller. 4) New items are typically warranted by the manufacturer or supplier, often contact information is on the packaging or user’s manual.