This Sun System 6 400 Watt switchable is perfect for the start to finish jobs. You can switch from HPS to MH with just a Flick of the switch. This unique ballast has all the features that are incorporated into our Sun System I fixture, but adds the ability to run 2 types lamps from one ballast. It offers an Aluminum heat sync enclosure anlong with a Heavy duty Key-way handle making it easy to hang on the wall. Units come with major brand ballast inside (Advance/universal).The rubber feet bottom reduces noise, vibration and provides air flow under the Sun System to keep it cool Along with High temperature capacitor inside. Comes completely assembled with tech Guide and a 8ft 120V UL listed Grounded MVP power cord. For your 240V Option all you need to do is Purchase your 8ft UL listed Grounded 240V MVP power cord plug in and your ready to run on 240V(sold separately).This Sun System ballast has a 5 YEAR warranty.

Yield Master II (4" Duct holes) Included
The Yield Master II is Textured, highly reflective (95%) body with aluminum ends.
- Fits MH1000 (reduced glass size BT-37) and 400, 250, 175 watt sizes.
Also HPS1000, 750, 600, 430, 400, 250, 150.
- Will not accept full size (BT-56) lamps.
- Will accept glass
5kv Socket Assembly with 15’ Lamp cord is built into the unit.
20"long x 18" wide x 7" tall

400W HPS Standard ET-18 Grow Lamp. Included
HIGH PRESSURE SODIUM LAMPS - These lamps are red/orange in the spectrum. They are the best lamps available for secondary or supplementary lighting (used in conjunction with natural sunlight). This type of light promotes flowering / budding in plants. It is ideal for Greenhouses / Commercial growing applications.
400 Watt HPS Standard lamps are rated at 50,000 lumens.

400W MH Universal Standard Grow Lamp. Included
METAL HALIDE LAMPS - This type of light is blue-orientated in the spectrum. It is the best type of light to be used as a primary light source (if no or little natural sunlight is available). This type of lamp promotes plant growth.
400 Watt MH Standard Lamp is rated at 36,000 lumens

Or just pick a diffrent reflector from list.