Ceramic Tile = 130%
Natural Stone = 200%
Fiber Glass / Acrylic = 100%
Steam Line 50ft+ = 120%
Glass Block Wall = 110%
Steam Line Subject to Freezing = 125%
Glass Wall = 110%
A ceramic steam shower with the dimensions 7ft length by 5ft wide and 7ft high, is 245 Cubic ft. 7 x 5 x 7 = 245. Since the shower has a ceramic tile wall, it then requires a 30% cubic footage increase. 245 x 0.30 = 73.5ft
The ceramic cubic feet is then added to the original dimension to calculate the total cubic footage. 73.5 (ceramic) + 245 (steam space) = 318.5 ft
Now select the next size of Steamcore model generator which exceeds the calculated room cubic feet. In this case the SC-375 (9000 watts) generator is required. If there is doubt in size, it is recommended to choose the next larger size.