DUCT SIZER A simple duct calculator, pocket size, for sizing air distribution systems by the equal friction method. Instructions and design data are imprinted on calculator.
| Power Source | Battery Powered |
| Calculator Type | Printing |
A**R
It’s does what I need it to
It’s smaller than I expected. About size of my hand
ترست بايلوت
منذ أسبوعين
منذ 5 أيام
