Hi-Pro 130V - 199V Light Bulbs from Satco Products, Inc. with a Mogul (E39) Base, 50W - 99W For Enclosed Fixtures where Color Temperature (Kelvin) is 5000+, HID Equivalent is 251W-400W, and Bulb Power Type is Ballast Bypass
$455.96$399.80($99.95 per Bulb )You save 12%