Factory Assembled Trench Duct
Straight Lengths
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Standard length of trench duct is 10 ft. (3 m). Cover plates are shipped separately.
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Features of trench duct are as follows:
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Trench duct width is cover plate width.
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Tub width is trench duct width less 1.875 in. (48 mm).
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Overall width (bottom flange to flange) is 3 in. (76 mm) wider than trench duct width.
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Standard depth is adjustable from 2.375–3.375 in. (61–86 mm). Also available as standard depth adjustable from 3–4 in. (76–102 mm). Other depths available.
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Tees, crosses, and horizontal elbows are shipped complete with cover plates assembled.
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Gray vinyl tile trim is furnished as standard. Aluminum is available when requested.
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The following features are available:
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Cover plate support post.
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Double tile trim on two sides of covers.
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Double tile trim on four sides of covers.
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Tunnels in horizontal elbows, tees and crosses
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Trench Width | Cover Plate Width–A | Bottom Plate Width–B | Tub Width–C | Tub Assembly Length | |||||
---|---|---|---|---|---|---|---|---|---|
in. | mm | in. | mm | in. | mm | in. | mm | in. | mm |
6 | 152 | 6 | 152 | 9 | 229 | 4.1 | 104 | 120 | 3048 |
9 | 229 | 9 | 229 | 12 | 305 | 7.1 | 180 | 120 | 3048 |
12 | 305 | 12 | 305 | 15 | 381 | 10.1 | 257 | 120 | 3048 |
18 | 457 | 18 | 457 | 21 | 533 | 16.1 | 409 | 120 | 3048 |
24 | 610 | 24 | 610 | 27 | 686 | 22.1 | 561 | 120 | 3048 |
30 | 762 | 30 | 762 | 33 | 838 | 28.1 | 714 | 120 | 3048 |
Legend—Straight Length Cover Plates
A | Cover plate screw slot |
B | Cover plate gasket |
C | Adjusting screw—5 per rail |
D | 0.125 in (3 mm) wide—reversible tile trim |
E | Concrete locking lug |
F | Adjustable height partition |
G | Plastic sound dampener |
Cover Plates (ordered separately)
Tee
Cross
Horizontal Elbow
Horizontal Elbow Dimensions
Catalog Number | Width | Weight | ||
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in. | mm | Lbs. | Kg. | |
6 | 152 | 8 | 4 | |
9 | 229 | 15 | 7 | |
12 | 305 | 23 | 10 | |
18 | 457 | 43 | 20 | |
24 | 610 | 70 | 32 | |
30 | 712 | 100 | 45 |
Dimensions
Trench Width | Cover Plate Width–A | Bottom Plate Width–B | Tub Width–C | ||||
---|---|---|---|---|---|---|---|
in. | mm | in. | mm | in. | mm | in. | mm |
6 | 152 | 6 | 152 | 9 | 229 | 4.1 | 104 |
9 | 229 | 9 | 229 | 12 | 305 | 7.1 | 180 |
12 | 305 | 12 | 305 | 15 | 381 | 10.1 | 257 |
18 | 457 | 18 | 457 | 21 | 533 | 16.1 | 409 |
24 | 610 | 24 | 610 | 27 | 686 | 22.1 | 561 |
30 | 762 | 30 | 762 | 33 | 838 | 28.1 | 714 |