| Universal 400 watt Metal Halide Ballast 1110-247-S-C-TC | $55.00 |
| 400 Watt Metal Halide Low Bay Light Fixtures Warehouse | $105.90 |
| SYLVANIA METALARC LAMPS METAL HALIDE 400 WATT CASE OF 6 | $22.50 |
| METAL HALIDE 400 WATT LIGHT FIXTURES | $25.00 |
| Lithonia Lighting 400 Watt Metal Halide Floodlight NEW! | $87.98 |
| FULL HOOD METAL HALIDE 400 watt MH Grow Light w ballast | $119.99 |
| Sunmaster 400 watt HPS MH Conversion Bulb Metal Halide | $49.95 |
| JUMBO HOOD 400 WATT METAL HALIDE GROW LIGHT MH w 400w | $119.79 |
| JUMBO HOOD 400 WATT METAL HALIDE GROW LIGHT MH w 400w | $119.79 |
| NEW SWITCHABLE GROW LIGHT 400 watt HPS MH metal halide! | $174.99 |
| 400 watt METAL HALIDE blue GROW LIGHT BULB 6500K ad/HPS | $24.99 |
| 400 watt METAL HALIDE blue GROW LIGHT BULB 6500K ad/HPS | $24.99 |
| 400 watt w BLOOM red METAL HALIDE blue GROW LIGHT BULB! | $24.79 |
| 400 Watt HPS /Metal Halide Light Cool Tube Reflector! | $59.99 |
| Sunmaster 400 watt MH Bulb 400w Lamp - Metal Halide | $44.95 |
| 400 Watt HPS /Metal Halide Light Cool Tube Reflector! | $59.98 |
| TWO 400 W Watt 20000K Metal Halide Aquarium Bulb Lamp | $19.00 |
| 400W 400 watt HQI 14000K DE Fc2 Metal Halide Bulb | $29.99 |
| 400W 400 watt 14000K Metal Halide Aquarium Bulb 14K | $19.99 |
| 400W 400 watt 14000K Metal Halide Aquarium Bulb 14K | $19.99 |
| 400W 400 watt 20000K Metal Halide Aquarium Bulb 20K | $19.99 |
| 400W 400 watt 20000K Metal Halide Aquarium Bulb 20K | $19.99 |
| 2pcs 400W 400 watt 14000K Metal Halide Aquarium Bulb | $48.00 |
| 400W 400 watt 20000K Metal Halide Aquarium Bulb 20K | $19.99 |
| 400W 400 watt HQI 14000K DE Fc2 Metal Halide Bulb | $29.99 |
| 2pcs 400W 400 watt 10000K Metal Halide Aquarium Bulb | $48.00 |
| Metal Halide Lamp Light 400 Watt Bulb No Reserve Free o | $9.90 |
| 2 x 400W 400 watt 20000K Metal Halide Aquarium Bulb 20K | $39.98 |
| 400 W Watt 14000K Metal Halide Aquarium Bulb Lamp Reef | $7.99 |
| 400 W Watt 20000K Metal Halide Aquarium Bulb Lamp Reef | $7.99 |
| METAL HALIDE 400 watt MH AQUARIUM LIGHT 20K 20000K | $134.87 |
| Metal Halide Lamp Light 400 Watt 6 Bulbs Free shipping | $50.00 |
| 20 400 Watt Multi-tap Acrylic Metal Halide High Bay | $350.00 |
| Metal Halide Ballast Lamp Light 400 Watt 120 480 M 59 | $60.00 |
| New, 400 Watt Metal Halide High Bay Light Fixtures | $92.90 |
| New Sylvania 400 Watt Metal Halide Bulb BT 37 | $6.99 |
| 400 Watt Metal Halide Light Fixtures | $10.50 |
| advance 400 watt core & coil ballast metal halide | $25.00 |
| (12) BRAND NEW 400 WATT SYLVANIA METAL HALIDE LAMPS. | $60.99 |
| PULSE START 400 Watt Metal Halide High Low Bay Lights | $135.00 |
| LITHONIA 400 WATT METAL HALIDE LIGHT FIXTURE WITH BULB | $19.00 |
| HIGH OUTPUT 400 WATT METAL HALIDE HI/LOW BAY SHOP LIGHT | $125.00 |
| LOW WATT METAL HALIDE HIGH BAY SHOP 400 w LIGHTS NEW! | $125.00 |
| 20 400 Watt Bi-Tap Aluminum Metal Halide High Bay | $300.00 |
| NEW!! 400 WATT METAL HALIDE FULL CUTOFF WALLPACK & LAMP | $189.90 |
| USED METAL GE HALIDE LIGHT WITH 400 WATT BULBS 277 VOLT | $15.50 |
| T5HO HI/HIGH BAY SHOP LIGHT reps 400 watt metal halide | $139.80 |
| New Parking Lot Lights 400 Watt Metal Halide | $158.90 |
| HOLOPHANE 400 WATT METAL HALIDE LIGHT FIXTURE | $1000.00 |
| 400 W Watt 14000K Metal Halide Aquarium Bulb Lamp Reef | $7.99 |