Vacuum System Accessories Flow-Through Silencers Model No.: FTS-1.00 Part Number A in. (mm) B in. (mm) D1 G Thread D2 in. (mm) D3 in. (mm) Item Weight oz. (grams) FTS-1.00 5.5 (139.7) 6.30 (160) G1″ .98 (25) 2.24 (57) 8.289 (235)