Allegro 9510-50 8" X 20" Polyester Vinyl Manhole Ventilation Passthru (1/EA) Mops & Handles and uniformly * Easy grip

and uniformly * Easy grip handle * NSF

* Double breasted * Breast pocket * Thermometer pocket on left sleeve * Poly/cotton twill

*Pre-laundered and pre-shrunk for a long product life *Envelope backing style

calibration cap

Allegro 9510-50 8" X 20" Polyester Vinyl Manhole Ventilation Passthru (1/EA) Mops & Handles and uniformly * Easy gripAllegro's MVP is 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 worker is down into the manhole. The ducting is vinyl and polyester with PVC coating and heat