Choose your platform size below to view the correct installation guide. For some joist orientations, ceiling brackets may be required.
| Model | Standard Mount | When Ceiling Brackets Are Needed |
|---|---|---|
| 4' x 8' | Use when ceiling joists run parallel with the platform width. | Required if ceiling joists run perpendicular. |
| 4' x 6' | The standard mount works if the joists align with the 6' span. | Brackets are required for perpendicular joists or unusual spacing. |
| 4' x 4' | Compact square platform mounts directly to parallel joists. | Brackets are used if joists run in the opposite orientation. |
| 3' x 8' | Standard mount fits most 16" on-center joists. | Needed when joist spacing or direction prevents direct mount. |
| 3' x 6' | Mounts directly when joists align with the 6' span. | Use brackets if joists run across the span. |
| 3' x 4' | Smallest platform — direct mount if joists align. | Brackets ensure stability when joists run perpendicular. |
ONRAX Ascension Layout diagram — shows ceiling joist orientation and when ceiling brackets are required.
| Platform Size | Standard Mount Guide |
|---|---|
| 4' x 8' | Download PDF |
| 4' x 6' | Download PDF |
| 4' x 4' | Download PDF |
| 3' x 8' | Download PDF |
| 3' x 6' | Download PDF |
| 3' x 4' | Download PDF |
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