Answer Hello Liang! Unfortunately, we do not have have the direct dimensions listed for the non duct filter kit WB02X10707. However, using our picture (with each square in the back drop measuring 1") the approx. measurements are 13 1/2" X 11 1/4". This is used on 30" models. Thanks! Read More... Answered by AppliancePartsPros.com | Tuesday, June 21, 2011