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C| Style | Model | Flange Width | Frame Depth | Max. Velocity | Fits Fan Dia. | Opening Width | Opening Length | Flange Type | Overall Height | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 3HHR3 | 1 3/8" | 1 5/8" | 1500 FPM | 30" | 30" | 30" | Front Flange | 32" | £155.45 | |
| B | 3C242 | 1 3/8" | 1 5/8" | 2250 FPM | 42" | 42" | 42" | Front Flange | 44" | £374.03 | |
| A | 3HHR4 | 1 3/8" | 1 5/8" | 1500 FPM | 36" | 34" | 34" | Front Flange | 36" | £168.12 | |
| B | 3HHR5 | 1 3/8" | 1 5/8" | 2250 FPM | 36" | 38" | 33" | Front Flange | 35" | £306.83 | |
| A | 3HHR2 | 1 3/8" | 1 5/8" | 1500 FPM | 24" | 24" | 24" | Front Flange | 26" | £142.07 | |
| C | 4HA12 | 1 5/8" | 1 3/8" | 1500 FPM | 36" | 34" | 35 3/4" | Reversed Flange | 37 3/4" | £181.97 | |
| C | 4HA10 | 1 5/8" | 1 3/8" | 1500 FPM | 24" | 27.7" | 70 3/4" | Reversed Flange | 30 3/4" | £142.18 | |
| C | 4HA11 | 1 5/8" | 1 5/8" | 1500 FPM | 30" | 33.9" | 70 3/4" | Reversed Flange | 30 3/4" | £155.65 |
Dayton ceiling shutters are placed securely in the ceiling opening just below the whole house fan units. These shutters feature an aluminium flanged frame and white-painted blades with a galvanised reinforcement strip for added strength and counter balancing efficiency. They utilise tie rods, on both ends of the blades, for uniform opening when the fan is ventilating the building. These units are recommended for horizontal-mount exhausts and are available in 26, 30.75, 32, 35, 36, 37.75 and 44 inch lengths.