US Duct Clamp Together 90 ° Elbow 1.0 CLR, 3" Diameter, Galvanized, 22 Gauge

The Manhole Ventilation Passthru (MVP) is designed to maintain and redirect air flow with minimal restriction into manholes, sewers and tanks The first manhole system that combines the low profile manhole air vent, 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 resistant up to 180 ...

Standard Branches have one "leg" coming off of the main line at either a 45 degree or 30 degree angle for optimal air flow. Branches are constructed of 18 gauge steel which allows us to solid weld the branching part to the trunk to ensure a very tight seal.

US Duct provides duct elbows that fit EVERY application from our standard segmented/gored elbows to one piece light gauge economical elbows for light dust collection - to air tight elbows for wet applications to heavy gauge welded elbows for abrasive applications to Flat-Back elbows with removable/replaceable AR plate for 'very' abrasive applications.

The duct adapters are designed to connect heat ducts to indirect-fired forced air kerosene heaters for indoor temperature control in commercial or residential environments. These adapters provide a quick and efficient method of connecting heat ducts to heaters for assembly ease. The steel construction ensures added strength in harsh working conditions. Black color finish. The product has a limited warranty of 1 year. Dimensions are 20-7/8"H x 20-7/8"W x 6-5/16"D.