Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
1007 IT British thermal unit inches per hour square foot degree Fahrenheit difference
1007 IT British thermal unit inches per hour square foot degree Fahrenheit difference
Natural Language
Math Input
Extended Keyboard
