12" Manhole Ventilation Passthru (MVP)
Maintains and redirects air flow with minimal restriction into manholes
The first manhole system that combines the low profile manhole air vent, 90° elbow, and built-in mounting all in one unit. This unit comes with a collapsible duct for easy entry, stored in a small storage bag that can be dropped down into the manhole with a quick release of the drawstring. The collapsible duct springs back into shape once is down into the manhole. The ducting is vinyl and polyester with PVC coating, heat resistant up to 180° F, meets ASTM 227 specs, and is UL 94V-0 flame retardant. The manhole cover fits into a flat channel corner for stabilization. Compact, lightweight, and made from Linear Low-Density Polyethylene (LLDPE), the MVP is not statically conductive. This unit is easy to store and ships in one small carton. Recyclable.
Features:
MVP made from Linear Low-Density Polyethylene (LLDPE)
Bright yellow color for easy visibility
Available with and without 15' (4.5 m) ducting
Ducting is made from vinyl and polyester with PVC coating
Ducting is heat resistant up to 180° F (88.2° C)
Small storage bag holds ducting
Quick release draw string to drop ducting into manhole
Patented by Allegro
Made in USA
Benefits:
Collapsible duct, for easy entry, stored in a small storage bag that can be dropped into the manhole with a quick release of the drawstring.
The manhole cover fits into a flat channel corner for stabilization.
Compact, lightweight, and made from Linear Low-Density Polyethylene (LLDPE), this unit is easy to store and ships in one small carton.
Ducting springs back into shape once is down into the manhole
Reduces overall size, storage, and shipping cost
Tech Tips and Warnings:
Pair with an 12" blower
Applications:
Construction
Industrial
Sewer
Confined Space
