Roof Curb Adapters Information - Rooftop Systems Inc. Notes

Oct 29, 2026

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Roof Curb Adapters Information by Rooftop Systems Inc. provides product notes and selection guidance for roof curb adapters. It specifies adapters that are welded, insulated, and totally sealed, and that include duct transitions for ducted systems that are not concentric. The material confirms availability of submittal drawings, discusses “new” adapters and evolving part numbers, and advises consulting RSI for concentric duct applications. It also notes possible field information needs and verifies correct curb when units show different color text. Included tables list unit model numbers, curb dimensions, curb models, notes, and footprint codes for various configurations.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Notes

Adapter requirements and installation guidance

Adapter selections table

Unit model numbers, curb dimensions, curb models, notes, footprint codes

Rooftop Systems Inc. Roof Curb Adapters Information Notes: 1. Adapters are welded, insulated, and totally sealed. 2. Adapters have duct transitions for ducted systems (not concentric) . 3. Submittal drawings are available. 4. "New" adapters are not designed but are available. Part numbers will beas they are developed. 5. Consult RSI for concentric duct applications. 6. Field information may be required before production of adapters. 7. Units with different color text have multiple size curbs. Verify correct curb. | Bryant, Day and Night, and Payne | | | | | | | --- | --- | --- | --- | --- | --- | | Unit Model No. | Curb L x W | | Curb Model | Notes | Footprint Code | | 542D 018-036 | 56.75 | 39.50 | 304851-301 | Bottom discharge curb. | SRSE | | 542D 042-060 | 68.75 | 44.50 | 304851-302 | Bottom discharge curb. | SRSE | | 542E 024-036 | 58.00 | 43.00 | 72-24-01 | Stiles Corp. made curb. | SRSE | | 542E 042-060 | 64.00 | 51.25 | 72-24-02 | Stiles Corp. made curb. | SRSE | | 542E 042-060 | 68.75 | 44.50 | 304851-302 | Bottom discharge curb. | SRSE | | 542E 090-120 | 77.75 | 74.50 | 308450-201 | Bottom discharge curb. | PRLM | | 548C 090-150 | 81.75 | 53.50 | 389028-203 | Bottom discharge curb. | SRSE | | 558B 036-072 | 70.88 | 46.56 | 314213-201 | Bottom discharge curb. | SRSE | | 558B 090-120 | 81.75 | 59.38 | 389004-201 | Bottom discharge curb. | SRSE | | 558B 240 | 146.31 | 84.00 | 311785-201 | Bottom discharge curb. | RSLM | | 558B 300-324 | 156.56 | 84.00 | 311785-202 | Bottom discharge curb. | RSLM | | 558C-D 036-072 | 70.88 | 40.69 | 389028-201 | Bottom discharge curb. | SRSE | | 559B 024-060 | 58.50 | 38.50 | | Bottom discharge curb. | SRSE | | 559C 048-060 | 81.13 | 45.56 | 70849D01 | Bottom discharge curb. | SRSE | | 559C 090-150 | 84.44 | 60.63 | 70849DA2 | Bottom discharge curb. | PRLM | | 559C 180 | 102.38 | 69.63 | 70849DA3 | Bottom discharge curb. | PRLM | | 559C 240 | 150.00 | 69.38 | 70849D04 | Bottom discharge curb. | VLRL | | 559C 300-360 | 164.75 | 69.38 | 70849D05 | Bottom discharge curb. | VLRL | | 559D 018-036 | 56.75 | 39.50 | 304851-301 | Bottom discharge curb. | SRSE | | 559D 042-060 | 68.75 | 44.50 | 304851-302 | Bottom discharge curb. | SRSE | | 559D 090 | 64.69 | 60.75 | 307175-103 | Bottom discharge curb. | SRSE | | 559D 090 | 64.69 | 60.75 | 307175-105 | Bottom discharge curb. | SRSE | | 559D 120-180 | 77.75 | 74.50 | 308450-201 | Bottom discharge curb. | PRLM | | 559E 024-036 | 58.00 | 43.00 | 72-24-01 | Stiles Corp. made curb. | SRSE | | 559E 042-060 | 64.00 | 51.25 | 72-24-02 | Stiles Corp. made curb. | SRSE | | 559E 048-060 | 68.75 | 44.50 | | Bottom discharge curb. | SRSE | | 559E 090 | 64.69 | 60.75 | 307175-103 | Bottom discharge curb. | SRSE | | 559E 090 | 64.69 | 60.75 | 307175-105 | Bottom discharge curb. | SRSE | Unit Footprints Rooftop Systems Inc. 2405 McIver, Carrollton, TX 75006 800-552-4822 Fax 972-243-0940 Rooftop Systems Inc. Roof Curb Adapters Information Notes: 1. Adapters are welded, insulated, and totally sealed. 2. Adapters have duct transitions for ducted systems (not concentric) . 3. Submittal drawings are available. 4. "New" adapters are not designed but are available. Part numbers will beas they are developed. 5. Consult RSI for concentric duct applications. 6. Field information may be required before production of adapters. 7. Units with different color text have multiple size curbs. Verify correct curb. | Bryant, Day and Night, and Payne | | | | | | | --- | --- | --- | --- | --- | --- | | Unit Model No. | Curb L x W | | Curb Model | Notes | Footprint Code | | 579C 048-060 | 81.13 | 45.56 | 70849D01 | Bottom discharge curb. | RSLR | | 579C 090-150 | 84.44 | 60.63 | 70849DA2 | Bottom discharge curb. | PRLM | | 579C 180 | 102.38 | 69.63 | 70849DA3 | Bottom discharge curb. | PRLM | | 579C 240 | 150.00 | 69.38 | 70849D04 | Bottom discharge curb. | VLRL | | 579C 300-360 | 164.75 | 69.38 | 70849D05 | Bottom discharge cur

FAQs

What are the key construction and sealing characteristics of the adapters?

The adapters are welded, insulated, and totally sealed.

Do the adapters support concentric duct applications?

No; they include duct transitions for ducted systems that are not concentric, and concentric duct applications require consulting RSI.

What information should be verified before producing or selecting adapters?

Verify the correct curb, and provide field information when required before adapter production; units with different color text indicate multiple size curbs.

Oct 29, 2026

Upload by Aria