Exhaust Fan 16" for Riga Greenhouses

The Riga 16" Exhaust Fan is a high-capacity ventilation solution engineered for larger hobby and professional greenhouses. Recommended for the Riga 5 models, it actively removes hot air and excess humidity to maintain the stable growing environment your plants need year-round.

Why Proper Greenhouse Ventilation Matters

Without adequate airflow, greenhouse temperatures can spike 20–30°F above outdoor levels on sunny days, causing heat stress, disease pressure, and crop loss. An exhaust fan mounted high on the back wall creates a negative-pressure draw that pulls fresh air through vents or louvers at the opposite end — the most effective passive-plus-active ventilation strategy for structures over 100 sq ft.

Key Features

• 16" blade diameter — delivers high CFM airflow suited to larger greenhouse footprints
• Requires a 16.25" × 16.25" wall opening — fits standard Riga 5 and Victorian VI panel cutouts
• Pre-wired with a 9-foot power cord — plug-and-play installation, no electrician required
• High-wall placement — installs near the ridge for maximum heat extraction
• Pairs with a thermostat controller — add automatic temperature management for hands-free climate control

Compatible Greenhouse Models

This fan is sized and rated for:

• Riga 5 greenhouse
  

For smaller Riga and Victorian models, see our 12" Exhaust Fan and 20" Exhaust Fan options.

Installation Overview

Mount the fan high on the back (leeward) wall of your greenhouse. Pair with passive intake vents or louvers on the front wall near ground level. Connect to a thermostat controller (sold separately) to automate on/off cycling based on your target temperature threshold.

Frequently Asked Questions

What size opening does the 16" exhaust fan require?
The fan requires a 16.25" × 16.25" square opening in your greenhouse wall panel.

Does this fan need to be hardwired?
No. It comes pre-wired with a 9-foot power cord and plugs into a standard outlet.

Can I use this fan with a thermostat?
Yes. It is compatible with standard greenhouse thermostat controllers for automatic temperature-based operation.

Which Riga greenhouse models does this fit?
This fan is recommended for the Riga 5. For other Riga models, check the 12" or 20" fan options.