RTSH-HD: Heavy Duty Duct Support
Heavy Duty Duct Supports utilize semi-structural beams to ensure the perfect amount of support for large ductwork, or ducts that need to be mounted 8 feet or more above your roof.
Utilizing 3” x 3” semi-structural beams, these supports are designed to fit project requirements that exceed the capability of our standard products.
Heavy Duty H-Stand Duct Supports can be used for very large duct, or duct that is installed 8 ft. or more above the roof.
Part Numbers
Width = Cross Brace Width
Height = Upright Height
| 24″ Height | 36″ Height | 48″ Height | 60″ Height | 72″ Height | 84″ Height | 96″ Height | 108″ Height | 120″ Height | |
| 24″ Width | RTSH2424 | RTSH3624 | RTSH4824 | RTSH6024 | RTSH7224 | RTSH8424 | RTSH9624 | RTSH10824 | RTSH12024 |
| 30″ Width | RTSH2430 | RTSH3630 | RTSH4830 | RTSH6030 | RTSH7230 | RTSH8430 | RTSH9630 | RTSH10830 | RTSH12030 |
| 36″ Width | RTSH2436 | RTSH3636 | RTSH4836 | RTSH6036 | RTSH7236 | RTSH8436 | RTSH9636 | RTSH10836 | RTSH12036 |
| 42″ Width | RTSH2442 | RTSH3642 | RTSH4842 | RTSH6042 | RTSH7242 | RTSH8442 | RTSH9642 | RTSH10842 | RTSH12042 |
| 48″ Width | RTSH2448 | RTSH3648 | RTSH4848 | RTSH6048 | RTSH7248 | RTSH8448 | RTSH9648 | RTSH10848 | RTSH12048 |
| 54″ Width | RTSH2454 | RTSH3654 | RTSH4854 | RTSH6054 | RTSH7254 | RTSH8454 | RTSH9654 | RTSH10854 | RTSH12054 |
| 60″ Width | RTSH2460 | RTSH3660 | RTSH4860 | RTSH6060 | RTSH7260 | RTSH8460 | RTSH9660 | RTSH10860 | RTSH12060 |
| 66″ Width | RTSH2466 | RTSH3666 | RTSH4866 | RTSH6066 | RTSH7266 | RTSH8466 | RTSH9666 | RTSH10866 | RTSH12066 |
| 72″ Width | RTSH2472 | RTSH3672 | RTSH4872 | RTSH6072 | RTSH7272 | RTSH8472 | RTSH9672 | RTSH10872 | RTSH12072 |
| 78″ Width | RTSH2478 | RTSH3678 | RTSH4878 | RTSH6078 | RTSH7278 | RTSH8478 | RTSH9678 | RTSH10878 | RTSH12078 |
| 84″ Width | RTSH2484 | RTSH3684 | RTSH4884 | RTSH6084 | RTSH7284 | RTSH8484 | RTSH9684 | RTSH10884 | RTSH12084 |
| 90″ Width | RTSH2490 | RTSH3690 | RTSH4890 | RTSH6090 | RTSH7290 | RTSH8490 | RTSH9690 | RTSH10890 | RTSH12090 |
| 96″ Width | RTSH2496 | RTSH3696 | RTSH4896 | RTSH6096 | RTSH7296 | RTSH8496 | RTSH9696 | RTSH10896 | RTSH12096 |
- For Double Cross Brace, add “-D”
- For Hot-Dip Galvanized, add “-HG”
- For RTSSPB20HG, Direct Mount Bases, add “-P”
Example: RTSHXXXX-P-HG denotes an H-Stand with direct mount bases in HG finish
***** Part numbers listed include (2) RTSF21 rubber bases, (2) Uprights, and (1) Cross brace in pre-galvanized finish *****
Typical Steel Duct Weights for H-Stand Loading
Surface Area of RTSF21 Base: 211.75 in2
Surface Area of RTSPUC Base: 71.50 in2
| Duct Size | Duct Weight/ft w/ 2″ Insulation |
Total Weight 6ft Spacing (lbs) |
Total Weight 8ft Spacing (lbs) |
RTSPUC Base PSI 6ft | RTSPUC Base PSI 8ft | RTSF21 Base PSI 6ft | RTSF21 Base PSI 68t |
|---|---|---|---|---|---|---|---|
| 28″x28″ | 28.80 | 172.80 | 230.40 | 1.558 | 1.961 | 0.585 | 0.721 |
| 30″x30″ | 30.90 | 185.40 | 247.20 | 1.646 | 2.078 | 0.615 | 0.761 |
| 42″x42″ | 43.20 | 259.20 | 345.60 | * | * | 0.789 | 0.993 |
| 54″x54″ | 55.60 | 333.60 | 444.80 | * | * | 0.965 | 1.227 |
| 60″x60″ | 61.80 | 370.80 | 494.40 | * | * | 1.053 | 1.345 |
| 84″x84″ | 86.50 | 519.00 | 692.00 | * | * | 1.403 | 1.811 |
| 96″x96″ | 98.80 | 592.80 | 790.40 | * | * | 1.577 | 2.043 |
* Application not permitted
** Weights for 16 ga. steel rectangular duct
*** PSI Calculation for a single duct
**** Weights include that of an H-Stand using both base types (RTSPUCF11 or RTSF21)
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