QuietCool AFG SLR SMT 50W Gable Fan
#5 in Gable mountFull review
For a gable vented attic where the owner wants app control and steady airflow around the clock, at the same price as the simpler AFG SLR-40.
Amazon $359$359
The QuietCool AFG SLR SMT 50W Gable Fan is the better solar attic fan overall, rated 3.3 to 3.2. The QuietCool AFG SLR SMT 50W Gable Fan leads on panel and features. The QuietCool AFG SLR SMT 50W Gable Fan costs $313.70 less ($359 vs $672.70).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Natural Light SAF32G Solar Gable Fan
#6 in Gable mountFull review
For a gable vented attic of up to 2,200 sq ft where a lifetime warranty is worth the premium. Hybrid gable fans cost far less.
Amazon $672.70$672.70
Which should you buy?
- Choose the QuietCool AFG SLR SMT 50W Gable Fan for panel (50 W panel vs 32 W panel) and features (thermostat, AC backup vs separate or tilting panel).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gable mount solar attic fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | QuietCool AFG SLR SMT 50W Gable Fan | Natural Light SAF32G Solar Gable Fan |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 25% | 61 $0.20 per CFM ($359, 1,780 CFM) | 14 $0.47 per CFM ($672.70, 1,440 CFM credited of 1,560 claimed (45 per panel watt)) |
| Airflow 15% | 62 1,780 CFM | 44 1,440 CFM credited of 1,560 claimed (45 per panel watt) |
| Panel 20% | 80 50 W panel | 44 32 W panel |
| Features 15% | 70 thermostat, AC backup | 30 separate or tilting panel |
| Warranty 25% | 0 warranty not published, scored as none | 100 lifetime warranty |
Specifications
| QuietCool AFG SLR SMT 50W Gable Fan | Natural Light SAF32G Solar Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Gable | Gable |
| Airflow | 1,780 CFM | 1,560 CFM |
| Attic area | 2,250 sq ft | 2,200 sq ft |
| Motor | DC | DC |
| Power | ||
| Panel | 50 W | 32 W |
| Separate or tilting panel | - | Yes |
| Thermostat | Yes | No |
| AC backup | Yes | No |
| Build | ||
| Warranty | - | Lifetime |
| Released | 2026-09 | - |