Attribute16: 11.5 in.
Products with this attribute (3 total)
Philips 31285-0 - 400W ED37 MH Bulb - Coated | 1000Bulbs.com
Philips 34416-8 - 400W Metal Halide ED37 Bulb | 1000Bulbs.com
Philips Switch Start 34415-0 - 400W Metal Halide ED37 | 1000Bulbs.com