Oval Single Wall Duct

Monroe Metal ovalizers have the capacity for producing oval sizes from 6/3 to 95/48. We are the only manufacturer who does not limit our spiral oval to 24” minor. Built-in continuous reinforcement with the 4-ply spiral lockseam and oval shape adds rigidity and strength and reduces the need for rod and angle stiffeners.

We offer the following options of flat oval duct:

Monroe Standard Flat Oval Spiral:
• Medium and high pressure application
• Provids a product for restricted space locations
• Progressive oval shape results in less friction loss than rectangular duct
• Provides a machine formed product designed to parallel round duct in characteristics and techniques such as slip fit joint connection and fewer joints to handle and seal
• Available in 12’ maximum lengths or cut to your specification

Monroe “V-Rip” Flat Oval Spiral:
• Low pressure application
• Lighter gauge material with five reinforcing ribs for extra rigidity
• Same quality and characteristics as standard oval
• Available in 12’ maximum lengths or cut to your specification.
• Lighter weight means easier handling and less field cost
• Can be used for medium pressure application due to its unique ribbed construction resulting in extra cost savings to you.

Materials:
• Paint Grip
• Stainless Steel
• Aluminum
• Aluminumized Steel
• Black Iron
• Poly-vinyl-sulfide (PVS) Longitudinal Welded Sam and Hammerlock Seam Duct is available upon request.


Products & Accessories

Accessory Fittings

To complete your job, we also offer a complete line of accessory fittings. These can be factory installed or shipped loose for field installation.

• Access Doors
• Angle Rings
• Insulation Stops
• Saddle Taps—lined or unlined; fabricated to fit major or minor axls.
• Grille/Register Taps to fit double wall duct
• Rectangular to Oval

No other manufacturer can offer such a complete line of accessories!

Duct Construction Standards

Single Wall Flat Oval Spiral- High Pressure, 1985 SMACNA
Pipe:       Major Width  Gauge Fittings:Major Width Gauge
 to 24"24  to 24"20
 25" - 36"22 25" - 36"20
 37" - 48"22 37" - 48"18
 49" - 60"20 49" - 60"18 
61" - 70"2061" - 70"16
71" - up1871" - up16


Single Wall Flat Oval "V Rib" Spiral Duct
Pipe:       Major Width  Gauge Fittings:Major Width Gauge
 to 24"26  to 24"22
 25" - 36"24 25" - 36"22
 37" - 48"24 37" - 48"20
 49" - 60"22 49" - 60"20 
61" - 70"2261" - 70"18
71" - up2071" - up18

Single Wall Flat Oval Longitudinal Seam Welded Duct - 1985 SMACNA
Pipe:       Major Width  Gauge  Fittings:Major Width Gauge
 to 24"20  to 24"20
 25" - 36"20 25" - 36"20
 37" - 48"18 37" - 48"18
 49" - 60"18 49" - 60"18 
61" - 70"1661" - 70"16
71" - up1671" - up16



• Spiral duct constructed with a 4-ply spiral lockseam made of galvanized metal meeting ASTM A-527
• Other materials and gauges available upon request
• Spiral pipe in 12’ maximum lengths or cut to length

** Fittings are continuously welded with seams painted to prevent corrosion
***V-Rip fittings are spot welded and sealed