Merrimack Valley Models HO Rectangular 3' x 5' - 4' Straight (pkg of 4)

Seen on the rooftops of residential, commercial, and industrial buildings to connect an exterior HVAC system to the the building interior.

Use our modular HVAC system to design the look that works for your scene. These ducts can extend straight runs by a scale 4' length.

• 3D printed in grey resin
• May require minor sanding and painting
• For ages 14 and above