Description
The Allegro Manhole Ventilation Passthru provides a convenient method for directing airflow from ventilation systems and blowers into confined spaces such as manholes, sewers and tanks. Its integrated design combines multiple ventilation components into one compact, easy-to-deploy assembly.
The MVP is manufactured from recyclable LLDPE in a high-visibility bright yellow finish. It is supplied with vinyl/polyester PVC-coated ducting featuring compressible inner support coils. The ducting is heat resistant up to 180°F (88.2°C) and meets ASTM 227 and UL 94V-0 flame-retardant requirements.
Its low-profile 90° elbow is designed to fit beneath the lower cross bar of a guardrail. The collapsible duct can be easily lowered into a manhole using the quick-release drawstring and springs back into shape after deployment. The compact construction also helps reduce storage and shipping requirements.
The 8-inch MVP is available in two ducting-length configurations: Model 9510-50 with 6 ft (1.83 m) ducting and Model 9510-55 with 15 ft (4.57 m) ducting.
Key Features
- 8-inch manhole ventilation passthru
- Designed to maintain and redirect airflow with minimal restriction
- Integrated low-profile manhole air vent and 90° elbow
- Built-in mounting
- Recyclable LLDPE construction
- High-visibility bright yellow finish
- Vinyl/polyester PVC-coated ducting
- Compressible inner support coils
- Ducting heat resistant up to 180°F (88.2°C)
- Meets ASTM 227 requirements
- Meets UL 94V-0 flame-retardant requirements
- Low-profile elbow fits beneath guardrail cross bars
- Collapsible duct for easy deployment
- Quick-release drawstring for lowering ducting
- Compact design for easier storage and shipping
Applications
- Manhole ventilation
- Sewer ventilation
- Tank ventilation
- Confined-space ventilation
- Static-controlled air movement
- Ventilation systems and blower applications
- Confined-space air handling
Certifications & Standards
- ASTM 227
- UL 94V-0 flame-retardant requirements
