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Philips 313585 MH175/U/M 175W BD17 Probe Start Metal Halide 4000K Medium E26 Base Clear Bulb M57/E (928601122311) backorder714 Fulham Workhorse Instant Start ElectronicPhilips 313585 MH175 U M 175W BD17 Probe Start Metal Halide 4000K Medium E26 Base Clear Bulb M57 E (928601122311)