I built this heater 3 years ago to use in my garage. It's direction is fully adjustable. Thing will heat a large garage in 5-7mins in -25 weather no problem. It does take a min or 2 to heat up as any large electric heater does.

Essentially what it is, is 2 - 4.8kw dimplex drywall heaters together in a 16gauge steel sleeve with an 800cfm fan behind them.

They are wired in parallel in the junction box located on the back of the unit. Split bolts hold the connections together. #6/3 wire (about 15ft) is attached.

This heater is 240v, each hot leg draws around 27.4 amps, you will need a 40a double pole breaker to use it (minimum 40a service).

If you don't have 40a service: You could lower the thermostats on each heater to lower the amp draw and thus lower the power requirements but you will need an amprobe to do this accurately.

I do have a contactor, thermostat and nema4 junction box i will include with it for an extra $50 bucks.

$100