Home of Industrial Ventilation and Custom Fabrication

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High-Quality Metal and Steel Duct Products

Industrial Duct Systems, Inc. is a family-owned-and­-operated company. We have more than 45 years of experience in the industry—committed to providing quality services and products.

Aiming for excellence in every project, our honest, loyal, and dedicated team will always stand behind our products. We believe in the quality of our services, and we will vouch for our excellent workmanship at all times.

Custom Sheet Metal Fabrication

If you do not see something that you particularly need, do not hesitate to get in touch with us so we can do a custom order.
We use up-to-date technologies to produce the finest sheet metal products for your unique needs.

Press & Rolled Steel Flanges

Minimum Order of $75.00!
Prices are subject to change with out notice and all order are F.O.B our factory, Roseville MI.
All orders will require a Purchase Order No. and fitting specifications!

Size 3

3.06" I.D X .875" H X 1" W - on a 4.313" Bolt Hole Center with 6 - .28" diameter bolt holes 10 Ga. Steel .70 weight

Size 4

4.06" I,D X .938" H X 1" W - on a 5.313" Bolt Hole Center with 6 - .28" diameter bolt holes 10 Ga. Steel .85 weight

Size 5

5.06" I.D X 1" H X 1" W - on a 6.313" Bolt Hole Center with 6 - .28" diameter bolt holes 10 Ga. Steel 1.18 Weight

Size 6

6.094" I.D X 1" H X 1" W - on a 7.313" Bolt Hole Center with 6 - .28" diameter bolt holes 10 Ga. Steel 1.13 weight

Size 7

7.13" I.D X 1" H X 1.13 W - on a 8.5" Bolt Hole Center with 6 - .38" diameter bolt holes 10 Ga. Steel 1.73 weight

Size 8

8.13" I.D X 1" H X 1.13" W - on a 9.563" Bolt Hole Center with 6 - .38" diameter bolt holes 10 Ga. Steel 1.9 weight

Size 9

9.13"I.D X 1.13" H X 1.25" W - on a 10.625" Bolt Hole Center with 6 - .44" diameter bolt holes 10 Ga. Steel 2.55 weight

Size 10

9.13" I.D X 1.13" H X 1.25" W - on a 11.813" Bolt Hole Center with 6 - .44" diameter bolt holes 10 Ga. Steel 3.05 weight

Size 11

11.13" I.D X 1.25" H X 1.38" W - on a 12.75 Bolt Hole Center with 6 - .44" diameter bolt holes 10 Ga. Steel 3.25 weight

Size 12

12.13" I.D X 1.25" H X 1.5" W - on a 14" Bolt Hole Center with 8 - .44" diameter bolt holes 10 Ga. Steel 3.88 weight

Size 13

13.13" I.D X 1.5" H X 1.5 W on a 15" Bolt Hole Center with 8 - .44" diameter bolt holes 10 Ga. Steel 4.25 weight

Size 14

14.13" I.D X 1.5" H X 1.5" W on a 15" Bolt Hole Center with 8 - .44" diameter bolt holes 11 Ga. Steel 4.25 weight

Size 15

15.13" I.D X 1.5" H X 1.5" W on a 17" Bolt Hole Center with 8 - .44" diameter bolt holes .188" Steel 7.25 weight

Size 16

16.13 I.D X 1.5" H X 1.5" W on a 18" Bolt Hole Center with 8 - .44" diameter bolt holes .188" Steel 8 weight

Size 17

17.13" I.D X 1.5" H X 1.5" W on a 19" Bolt Hole Center with 8 - .44" diameter bolt holes .188" Steel 8.25 weight

Size 18

18.13" I.D X 1.5" H X 1.5" W on a 20" Bolt Hole Center with 8 - .44" diameter bolt holes .188" Steel 8.5 weight

Size 19

19.13" I.D X 1.5" H X 1.5" W on a 20.75" Bolt Hole Center with 12 - .44" diameter Bolt holes .188" Steel 8.75 weight

Size 20

20.13" I.D X 1.5" H X 1.5" W on a 21.75" Bolt Hole Center with 12 - .44" diameter bolt holes .188" Steel 9.5 weight

Size 21

21.13" I.D X 1.5" H X 1.5" W on a 22.75" Bolt Hole Center with 12 - .44" diameter bolt holes .188" Steel 10.25 weight

Size 22

22.13" I.D X 1.5" H X 1.5" W on a 23.75" Bolt Hole Center with 12 - .44" diameter bolt holes .188" Steel 10.75 Weight

Size 23

23.13" I.D X 1.5" H X 1.5" W on a 24.88" Bolt Hole Center with 12 - .44" diameter bolt holes .188" Steel 11.25 weight

Size 24

24.13" I.D X 1.5" H X 1.5" W on a 25.88" Bolt Hole Center with 12 - .44" diameter bolt holes .188" Steel 11.50 weight

Size 26

26.13" I.D X 2" H X 2" W on a 28.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 16.25 weight

Size 27

27.13" I.D X 2" H X 2" W on a 29.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 17.38 weight

Size 28

28.13" I.D X 2" H X 2" W on a 30.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 18 weight

Size 29

29.13" I.D X 2" H X 2" W on a 31.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 18.75 weight

Size 30

30.13" I.D X 2" H X 2" W on a 32.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 19.50 weight

Size 31

31.13" I.D X 2" H X 2" W on a 33.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 20.38 weight

Size 32

32.12" I.D X 2" H X 2" W on a 34.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188 steel 20.75 weight

Size 33

33.12" I.D X 2" H X 2" W on a 35.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 21.25 weight

Size 34

34.13" I.D X 2" H X 2" W on a 36.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 22 weight

Size 35

35.13" I.D X 2" H X 2" W on a 37.38" Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 22.50 weight

Size 36

36.13" I.D X 2" H X 2" W on a 38.38 Bolt Hole Center with 16 - .44" diameter bolt holes .188" Steel 23 weight

Size 37

37.13" I.D X 2" H X 2" W on a 39.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 23.75 weight

Size 38

38.13" I.D X 2" H X 2" W on a 40.38" Bolt Hole Center with 16 24 - .44" diameter bolt holes .188" Steel 24.50 weight

Size 39

39.13" I.D X 2" H X 2" W on a 25" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 25 weight

Size 40

40.13" I.D X 2" H X 2" W on a 42.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 25.75 weight

Size 41

41.13" I.D X 2" H X 2" W on a 43.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 26.13 weight

Size 42

42.13" I.D X 2" H X 2" W on a 44.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 26.50 weight

Size 43

43.13" I.D X 2" H X 2" W on a 45.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 27.38 weight

Size 44

44.13" I.D X 2" H X 2" W on a 46.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 28 weight

Size 45

45.13" I.D X 2" H X 2" W on a 47.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 28.63 weight

Size 46

46.13" I.D X 2" H X 2" W on a 48.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 29 weight

Size 47

47.13" I.D X 2" H X 2" W on a 49.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 29.88 weight

Size 48

48.13" I.D X 2" H X 2" W on a 50.38" Bolt Hole Center with 24 - .44" diameter bolt holes .188" Steel 30.75 weight

Blast Gates

Minimum Order of $75.00!
Prices are subject to change with out notice and all order are F.O.B our factory, Roseville MI.
All orders will require a Purchase Order No. and fitting specifications!

  • 3" Diameter - Aluminum
  • 4" Diameter - Aluminum
  • 5" Diameter - Aluminum
  • 6" Diameter - Aluminum
  • 7" Diameter - Aluminum
  • 8" Diameter - Aluminum
  • 9" Diameter - Aluminum
  • 10" Diameter - Aluminum
  • 12" Diameter - Aluminum
  • 14" Diameter - Aluminum
  • 16" Diameter - Aluminum
  • 18" Diameter - Aluminum
  • 20" Diameter - Aluminum

Reach Out to Us Today

We serve the Metro Detroit areas. We can also do out-of-the-state work.
Get in touch with us for more information.

More Products

  • BLOW PIPE FITTINGS
  • ELBOWS
  • PIPES & STACKS
  • TAPERS
  • TRANSITIONS (SQ. to RD.)
  • TEES 30º, 45º, & 60°
  • 3 WAY 90º TEES
  • SHOE TEES
  • BLAST GATES & CUT-OFFS
  • DRAW COLLARS (APRONS)
  • ROOF FLANGES
  • RAIN CAPS
  • 3 WAY 90º TEES
  • SHOE TEES
  • BLAST GATES & CUT-OFFS
  • DRAW COLLARS (APRONS)
  • ROOF FLANGES
  • RAIN CAPS
  • COMPANION RINGS & FLANGES
  • CLEAN OUT DOORS
  • HOODS•PRICES ON REQUEST
  • WYE BRANCHES
  • FLEXIBLE PIPE
  • DRAW BANDS