High quality ceiling t-grid light weight,good strength,cauterization resistant,water &fire resistant, passed ISO9001 High quality ceiling t-gridLinyi Weicheng Metalwork Co ... water resistance. 1) Size (H x W):a) Main tee: 38 x 24, 32 x 24mmb) Cross tee: 26 x 24 ... service, harmonious paint make it envrionmental friendly. high quality ceiling t-grid