NEW TUPPERWARE 6 QT ULTRA PRO OVENWARE DOUBLE LASAGNA ROASTER 12 X 9 BY 4 1/2" .
The 3 1/2 Qt. Ultra Pro fits perfectly over or under the 6 Qt. to make a large Roaster. You can double your lasagna all in one. Ultra Pro is oven safe up to 480 degrees & freezer safe to - 13 degrees. !