Can different GN pan sizes be mixed under the factory lid?
FAQ
Yes, mixed GN sizes can work as long as they still make up a complete GN grid with no open gaps and nothing sits proud of the rail level.
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Yes, mixed GN sizes can work as long as they still make up a complete GN grid with no open gaps and nothing sits proud of the rail level.
Practical rules that prevent lid issues and warm spots:
Build mixed layouts using GN fractions that sum cleanly across the opening (for example, combinations of 1/3 with 1/6, or 1/4 with 1/8).
Avoid leaving “dead space”. Open gaps leak cold air and can lead to uneven product temperatures.
Keep pan rims fully supported on the rails. If a smaller pan needs an adaptor bar or spacer, use one.
Don’t overfill. For best holding performance, keep product below the pan rim so the lid closes properly and cold air can circulate.
Operating temperature for CTG/CTS in service: for food safety and quality, most operators target a chilled holding band around 0°C to +4°C at product level. Setpoints can vary with kitchen heat load, lid opening frequency and how full the pans are, so verify with a calibrated probe and log checks for HACCP, especially during busy periods.
Read the full guide: Unifrost Cold Topper GN Pan Size, Depth & Divider Compatibility Guide for Irish Prep Lines.
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