Food & Cold Storage Projects Freezer Corridor Fast Doors for a Frozen Food Plant Poland Project reference: Freezer Corridor Fast Doors for a Frozen Food Plant. Customer Challenge A frozen food plant needed fast doors on internal freezer corridors where vapour barriers and sub-zero air had to stay separated. Our Solution We supplied insulated fast doors with heated guides and anti-freeze control logic, tested through a winter commissioning period. Results The corridors keep their temperature profile through continuous shifts and defrost cycles no longer interrupt production flow.