Kason 1827 narrow jamb telescoping heated pressure relief port, 3-1/2" - 5" thick panels, 120V
- Dual port valves adjust to flow conditions to work in a wide range of walk-in sizes and environments
- High flow capacity for walk-in sizes up to 10,000 cf for coolers, and 5,000 cf for freezers
- Heater coupled directly to louver for more frost resistance than previous models, rated down to -30°F internal temperature of freezer
- Lower wattage consumes less energy than competitive models of same flow capacity
- Telescopic adjustment for wall thicknesses from 31/2†to 5â€, makes for easier installation
- Compact design, fits in tighter spaces than previous vent models with same flow capacity
- NSF Iisted and UL recognized design
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