Merrimack Valley Models HO Cyclone Air Vents (6)

Set of 6 cyclone / rotary air vents in HO scale for various roof tops on your model railroad layout. Don't miss adding critical detail to your commercial and industrial rooftops. Fits with most eras.

• Set of 6 rooftop cyclone air vents
• 3D printed in gray resin
• May require minor sanding and painting
• Not intended for under the age of 14
• Made in the USA