About Duct Connections
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About Measuring Hose and Tube Clamps
What's the best way to determine the clamp size you'll need? Simply measure the outside diameter of your hose with the fitting installed. Some clamps accommodate a range of sizes, so be sure the size you need falls in the middle of that range.
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About Bonding and Grounding for Static Control
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Duct Hose Clamps for Spiral Duct
Also known as bridge clamps, these worm-drive clamps align with the spiral support on wire duct hose to provide a tight seal.
When looking at the end of your hose, a right-hand spiral twists away from you clockwise; a left-hand spiral twists away from you counterclockwise. Clamps have very good corrosion resistance. Do not exceed the maximum torque or clamps may be damaged.
Note: When choosing a clamp, measure the outside diameter of your hose with the fitting installed.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | Wd. | Thick. | Min. Temp., °F | Max. Temp., °F | Max. Torque, in.-lbs. | Drive Style  | Hex Size | Reusable | Each | |
For Right-Hand Spiral Direction | |||||||||||
200/300 Series Stainless Steel with 410 Stainless Steel Screw | |||||||||||
| 1 3/4" to 2 1/2" | 44 to 64 | 3/8" | 0.02" | -100° | 1500° | __ | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 2 1/2" to 3 1/2" | 64 to 89 | 3/8" | 0.02" | -100° | 1500° | __ | Slotted, External Hex | 1/4" | Yes | 00000000 | 0000 |
301 Stainless Steel with 305 Stainless Steel Screw | |||||||||||
| 3 1/4" to 4 3/4" | 83 to 121 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 4 1/4" to 5 3/4" | 108 to 146 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 5 1/4" to 6 3/4" | 133 to 171 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 7 1/4" to 8 3/4" | 184 to 222 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 8 1/4" to 9 3/4" | 210 to 248 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 9 1/4" to 10 3/4" | 235 to 273 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 11 1/4" to 12 3/4" | 286 to 324 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 13 1/4" to 14 3/4" | 337 to 375 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 15 1/4" to 16 3/4" | 387 to 425 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 17 1/4" to 18 3/4" | 438 to 476 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
304 Stainless Steel with Steel Screw | |||||||||||
| 13/16" to 1 1/16" | 22 to 28 | 3/16" | 0.02" | -30° | 225° | 13 | Phillips, External Hex | 7/32" | Yes | 00000000 | 00000 |
| 1" to 1 1/8" | 25 to 29 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 3/16" to 1 3/8" | 30 to 35 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 1/4" to 1 1/2" | 32 to 37 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 1 1/2" to 1 3/4" | 38 to 44 | 11/32" | 0.031" | -30° | 225° | 27 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
| 20" to 21" | 510 to 535 | 15/32" | 0.04" | -30° | 225° | 44 | Phillips, External Hex | 1/4" | Yes | 00000000 | 00000 |
For Left-Hand Spiral Direction | |||||||||||
200/300 Series Stainless Steel with 410 Stainless Steel Screw | |||||||||||
| 2 1/8" to 3 1/8" | 54 to 79 | 3/8" | 0.04" | -100° | 1500° | __ | Slotted, External Hex | 1/4" | Yes | 00000000 | 0000 |
301 Stainless Steel with 305 Stainless Steel Screw | |||||||||||
| 3 1/4" to 4 3/4" | 83 to 121 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 4 1/4" to 5 3/4" | 108 to 146 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 5 1/4" to 6 3/4" | 133 to 171 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 7 1/4" to 8 3/4" | 184 to 222 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 8 1/4" to 9 3/4" | 210 to 248 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 9 1/4" to 10 3/4" | 235 to 273 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 11 1/4" to 12 3/4" | 286 to 324 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 13 1/4" to 14 3/4" | 337 to 375 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 15 1/4" to 16 3/4" | 387 to 425 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
| 17 1/4" to 18 3/4" | 438 to 476 | 1/2" | 0.025" | -250° | 500° | 35 | Slotted, External Hex | 5/16" | Yes | 00000000 | 00000 |
Work-Load-Rated Quick-Release Duct Hose Clamps
Unlike other duct hose clamps, these are rated for a maximum work load (the maximum force the latch can withstand without affecting its operation or appearance). Clamps have a quick-release latch that lets you access your line frequently while maintaining your original clamp size.
Do not exceed the maximum torque or clamps may be damaged.
Clamps with a safety catch will not open accidentally. When the latch is closed, the safety catch automatically engages to lock it.
Zinc-plated steel clamps perform best in dry environments. The zinc plating offers temporary protection from moisture, but once it wears away the steel will rust.
304 stainless steel can be used in wet environments, but salt water or chemicals will cause staining and rust spots.
Note: When choosing a clamp, measure the outside diameter of your hose with the fitting installed.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | Wd. | Thick. | Latch Wd. | Temp. Range, °F | Max. Torque, in.-lbs. | Drive Style | Hex Size | Reusable | Each | |
Zinc-Plated Steel with Zinc-Plated Steel Screw | |||||||||||
150-lb. Work Load Limit | |||||||||||
| 2 3/4" to 4 1/2" | 70 to 115 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 000000 |
| 3 1/2" to 5 3/8" | 90 to 135 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 5 1/8" to 6 7/8" | 130 to 175 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 6 3/4" to 8 1/2" | 170 to 215 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 8 1/4" to 10" | 210 to 255 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 9 7/8" to 11 5/8" | 250 to 295 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 11 3/8" to 13 1/4" | 290 to 335 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
| 13" to 14 3/4" | 330 to 375 | 1/2" | 0.028" | 7/8" | 33° to 400° | 50 | Slotted, External Hex | 7mm, 9/32" | Yes | 0000000 | 00000 |
304 Stainless Steel with 304 Stainless Steel Screw | |||||||||||
220-lb. Work Load Limit | |||||||||||
| 2 3/4" to 4 1/2" | 70 to 115 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 3 1/2" to 5 3/8" | 90 to 135 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 5 1/8" to 6 7/8" | 130 to 175 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 6 3/4" to 8 1/2" | 170 to 215 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 8 1/4" to 10" | 210 to 255 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 9 7/8" to 11 5/8" | 250 to 295 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 11 3/8" to 13 1/4" | 290 to 335 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 13" to 14 3/4" | 330 to 375 | 5/8" | 0.031" | 7/8" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
450-lb. Work Load Limit | |||||||||||
| 9 7/8" to 11 5/8" | 250 to 295 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 11 3/8" to 13 1/4" | 290 to 335 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 13" to 14 3/4" | 330 to 375 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 14 5/8" to 16 3/8" | 370 to 415 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 16 1/8" to 17 7/8" | 410 to 455 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 17 3/4" to 19 1/2" | 450 to 495 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 00000 |
| 19 1/4" to 21 1/8" | 490 to 535 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 20 7/8" to 22 5/8" | 530 to 575 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 22 1/2" to 24 1/4" | 570 to 615 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 24" to 25 3/4" | 610 to 655 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 25 9/16" to 27 5/8" | 650 to 695 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
Clamp ID Range | Band | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | Wd. | Thick. | Latch Wd. | Temp. Range, °F | Max. Torque, in.-lbs. | Drive Style | Hex Size | Reusable | Each | |
304 Stainless Steel with 304 Stainless Steel Screw | |||||||||||
350-lb. Work Load Limit | |||||||||||
| 1 3/4" to 2 3/16" | 45 to 55 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 0000000 |
| 2 3/16" to 2 9/16" | 55 to 65 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 2 9/16" to 3 9/16" | 65 to 90 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 3 5/16" to 4 1/2" | 85 to 115 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 4 5/16" to 6 1/8" | 110 to 155 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
| 5 7/8" to 7 11/16" | 150 to 195 | 5/8" | 0.031" | 15/16" | -4° to 428° | 130 | Slotted, External Hex | 8mm | Yes | 0000000 | 000000 |
Quick-Release Duct Hose Clamps
Flip the toggle latch to install and remove these clamps in seconds.
Clamps open completely for easy installation around blower hose and ventilation duct. They have fair corrosion resistance.
Note: When choosing a clamp, measure the outside diameter of your hose with the fitting installed.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | ||||||
|---|---|---|---|---|---|---|---|
| Inch | mm | Wd. | Thick. | Temp. Range, °F | Reusable | Each | |
Galvanized Steel with Zinc-Plated Steel Latch | |||||||
| 4" to 4 1/4" | 101 to 108 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 000000 |
| 6" to 6 1/4" | 152 to 159 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 8 3/16" to 8 3/8" | 208 to 213 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 10 3/16" to 10 3/8" | 259 to 264 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 12 1/4" to 12 7/16" | 311 to 316 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 14 1/4" to 14 7/16" | 362 to 366 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 16 3/16" to 16 3/8" | 411 to 415 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 18 3/16" to 18 3/8" | 462 to 466 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 20 3/16" to 20 3/8" | 513 to 517 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
| 24 3/16" to 24 7/16" | 614 to 620 | 7/8" | 0.035" | -250° to 500° | Yes | 00000000 | 00000 |
Duct Hose Clamps with Grounding Cable
Prevent static charge buildup while securely connecting duct hose with a wire spiral. These clamps come with a grounding cable to protect you and your equipment from shock, even in dusty areas. Because the cable connects through the bridge of the clamp, you can ground your hose without damaging it or exposing the spiral.
To create a tight seal, these clamps—also known as bridge clamps—align on both sides of the wire spiral in your duct hose. The bridge crosses over the top of the wire to hold the clamp in place. Made of stainless steel, these clamps also resist rusting.
All of these clamps are for right-hand spiral hose. When looking at the end of your hose, a right-hand spiral twists away from you clockwise. To choose a clamp, measure the outside diameter of your hose with the fitting installed. Do not exceed the maximum torque or you may damage your clamp.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | Band | Copper Cable | For Right-Hand Spiral Direction | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD | Inch | mm | Wd. | Thick. | Electrical Connection Type | Lg., ft. | OD | Insulation Color | Temp. Range, °F | Max. Torque, ft.-lbs. | Drive Style | Hex Size, mm | Reusable | Specifications Met | Each | |
304 Stainless Steel with Steel Screw | ||||||||||||||||
Insulated Cable | ||||||||||||||||
| 1 1/2"-2" | 1 3/8" to 2 3/16" | 35 to 55 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 000000 |
| 2"-3" | 1 3/4" to 2 9/16" | 45 to 65 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 2"-3" | 2 3/16" to 2 15/16" | 55 to 75 | 3/8" | 0.031" | Ring Terminal (1/8" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 3"-4" | 2 15/16" to 3 3/4" | 75 to 95 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 3"-4", 4"-6" | 3 3/4" to 4 1/2" | 95 to 115 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6" | 4 1/8" to 4 15/16" | 105 to 125 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6" | 4 15/16" to 5 11/16" | 125 to 145 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 4"-6", 6"-12" | 5 11/16" to 6 1/2" | 145 to 165 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 6 1/8" to 6 7/8" | 155 to 175 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 7 5/16" to 8 1/16" | 185 to 205 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
| 6"-12" | 7 11/16" to 8 7/16" | 195 to 215 | 3/8" | 0.031" | Ring Terminal (3/16" Hole Dia.) | 1.5 | 0.07" | Green | -30° to 225° | 26.5 | Phillips, External Hex | 7 | Yes | DIN 3017 | 00000000 | 00000 |
Quick-Disconnect Duct and Fittings
Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.
Galvanized steel has good corrosion resistance. 304 stainless steel is the most corrosion resistant.
For technical drawings and 3-D models, click on a part number.
Galvanized Steel | 304 Stainless Steel | |||
|---|---|---|---|---|
| Duct Size | Each | Each | ||
| 3 | 00000000 | 000000 | 00000000 | 000000 |
| 4 | 0000000 | 00000 | 00000000 | 00000 |
| 5 | 0000000 | 00000 | 00000000 | 00000 |
| 6 | 0000000 | 00000 | 00000000 | 00000 |
| 7 | 00000000 | 00000 | 00000000 | 00000 |
| 8 | 00000000 | 00000 | 00000000 | 00000 |
| 9 | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 00000000 | 00000 | 00000000 | 00000 |
| 12 | 00000000 | 00000 | 00000000 | 00000 |
| 14 | 00000000 | 00000 | 00000000 | 00000 |
| 16 | 00000000 | 00000 | 00000000 | 00000 |
| 18 | 00000000 | 00000 | 00000000 | 00000 |
| 20 | 00000000 | 00000 | 00000000 | 00000 |
| 22 | 00000000 | 00000 | 000000 | 00 |
| 24 | 00000000 | 00000 | 000000 | 00 |
