Heng's SV4112-G4
Manual lid lift with three fan speeds and reversible airflow; use the controls on the vent.
Identify Heng's Zephyr SV4112 & SV4113 Powered Roof Vents
The two smoke-lid Zephyr vents may appear similar from the roof, but one lifts manually while the other has a powered lid, remote control and rain sensor. Part SV4112-G4 is the manual-lift, locally controlled fan; SV4113-G4 adds powered opening and automatic rain-sensing closure. Match the control arrangement before selecting an exact replacement.
Identify the Zephyr model by its controls
Both products belong to Heng's Zephyr 12V, three-speed, reversible-airflow family. Their lid-control systems are not the same.
| Manufacturer MPN | Lid operation | Fan control | Rain/remote equipment |
|---|---|---|---|
| SV4112-G4 | Manual lift | Local three-speed controls | No rain-sensor/remote feature listed |
| SV4113-G4 | Powered lid lift | Remote control | Rain-sensor auto-closing |
Electrical reference for the Zephyr family: 12V DC, 18W, 1.6A and 1,200 RPM at high speed, with reversible airflow and high/medium/low settings. These ratings describe the fan system; verify the installation's wiring, protection, roof opening and finish before fitting a replacement.
What to inspect before identifying the part
- Inspect lid operation: SV4112-G4 uses manual lift; SV4113-G4 operates the lid from a remote.
- Look for rain sensing: the SV4113-G4 has a rain sensor and an automatic lid-close function; this does not replace normal leak inspection.
- Check the original wiring: both use a 12V fan system, but powered lifting and remote control require the correct control equipment.
- Verify supplied parts: the model's garnish, control and harness arrangements matter when replacing an existing assembly.
- Measure the opening: both are designed for a nominal 14 × 14-inch roof opening; compare the actual installation against the manufacturer's instructions.
Products by exact manufacturer number
Each card links to the matching UsedRVParts listing. Confirm its stated condition and current availability; viewing or pickup in Kelowna is by appointment.
Heng's SV4113-G4
Remote-controlled powered lid, three-speed reversible fan and automatic rain-sensing close feature.
Related roof-vent guides
For a simpler manually opening assembly, see the manual Heng's vent identification chart. For an insert rather than a complete new roof unit, compare the Vortex and Typhoon retrofit identification guide.
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