Single-Wall, Round and Flat Oval Duct

Single-Wall, Flat Oval Fittings

A complete line of fittings designed for low leakage and efficient performance is available for use with McGill AirFlow’s single-wall, flat oval duct. Each fitting is sized accurately to allow easy field assembly. Fittings are available in solid welded, spot or tack welded and sealed, lap and riveted (or screwed) and sealed, and standing seam constructions.

Single-wall, flat oval fittings

Flat Oval Fittings
Available Materials, and Thicknesses

UNI-SEAL™ Fittings (2) (spot or tack welded and sealed, lap and riveted/screwed and sealed, solid welded, or standing seam)
Materials (1,3)	Thicknesses
Galvanized Steel	26-10 gauge
Stainless Steel	26-10 gauge
Aluminum	0.032-0.090 inch

(1) Single-wall, flat oval fittings are also available in nongalvanized carbon steel and paintable galvanized steel. Stainless steel is generally type 304 or 316. Aluminum is generally type 3003-H14. UNI-COAT® single-wall, flat oval fittings (polyvinyl-chloride-coated galvanized steel) are available on special order.

(2) Fittings that are 16 gauge (Aluminum-0.090 inch) or heavier are fully welded.

(3) SilverGuard™ single-wall, flat oval fittings (pre-coated with an antimicrobial) are available on special order.

Flat Oval Duct and Fittings—
Available Size Ranges

Minor Axis (inches)	Major Axis (inches)
Minor Axis (inches)	Minimum	Maximum Spiral Lockseam	Maximum Longitudinal Seam or Fitting Size
3	8	22	30
4	7	21	40
5	8	21	46
6	8	59	59
7	10	21	62
8	10	77	77
9	12	23	89
10	12	79	99
11	14	25	109
12	14	81	119
14	20	80	139
16	22	79	143
18	23	81	134
20	26	80	140
22	35	82	134
24	37	81	141
26	29	not available	137
28	31	not available	144
30	43	84	141
32	35	not available	139
34	37	not available	138
36	39	not available	136
38	41	not available	136
40	43	not available	143

McGill AirFlow's Single-Wall, Round and Flat Oval Duct and Fittings:

Single-Wall, Round Duct
Single-Wall, Round Lined Duct
Single-Wall, Round Fittings
Single-Wall, Flat Oval Duct
Single-Wall Flat Oval Fittings

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