WE-EF / 310-9290 Surface fitters (pair) The optional Flat Surface Fitters (pair) provide enhanced mounting surface coverage and facilitate concealing of a recessed junction box. Specifications: C1: 0.79 C2: 1.18 D1: 7.1 D2: 5.5 L: 42.1 M1: .35 M: 1,7 kg Weight: 3.70 Windage: 0.324 ft²