Eisco Labs Ventilation Apparatus, Large Size, 8.7"x6.5"x4"

• VISUAL LEARNING || This apparatus provides a ready means of demonstrating conventional movements in heated air. It is based on an early method of ventilating mine galleries before the invention, in the nineteenth century, of fans driven by electric motors. It also demonstrates the function of domestic chimneys when used in conjunction with open fires.
• WHAT'S IN THE BOX || This Kit includes two glass chimneys, a metal box with a sliding door, and a wax night light. Candles are not included and will need to be purchased separately.
• PRODUCT DIMENSIONS || Fully assembled this apparatus measures 8.7"x 6.5"x 4".

This apparatus is comprised of a metal box 8.7"x6.5"x4" (22x10x16.5cm) with a sliding front door, two glass chimneys and a candle holder. Candles are not included.