RTSH: Single Duct Support
This Single Cross Brace Duct Support features an H-Stand design with non-penetrating, rectangular RTSF21 rubber bases. It provides reliable duct support on roof for either rooftop ducts or cable trays.
The RTSH Single H-Stand Duct Support safely mounts spiral or rectangular duct on rooftops and supports efficient installs. It is a dependable duct support on roof option for contractors, engineers, and facility teams managing rooftop runs
Non-penetrating RTSF21 rubber bases help eliminate prefabrication and reduce on-site roof work. They also protect the roof surface during installation and long-term use. A welded cross brace and precut framing reduce hardware needs and simplify assembly.
This duct support on the roof system allows easy height adjustment above 12 inches, helping teams clear obstacles and align duct runs cleanly. It can also be used to support cable trays where a stable, non-penetrating base is preferred.
Bolt down bases are interchangeable in most configurations to address any seismic or wind concerns that may be present.
Available finishes: Pre-galvanized, Hot Dip Galvanized, and Stainless Steel.
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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