Motor parts: 1  back plate, center pole, front plate â these three parts are usually made of iron or a similar permeable material to form the magnet circuit with the magnet. The front plate and pole piece form the gap of the magnet circuit.
The cost to install drywall is about $1.50 per square foot. After material and labor are added in, the cost per panel can range from around $40.00 to $60.00. A typical 12x12 room, for example, will use 12 panels.
The cost to install drywall using a contractor is about 50% more than the cost when homeowners do the work themselves. Most contractors charge around $1 per square foot to hang and finish drywall or $30 per sheet. Most contractors prefer large jobs to small jobs and charge more per square foot for small jobs.