Rw 37 dB, in accordance with BS EN ISO 140-3., Rw 41 dB, in accordance with BS EN ISO 140-3., Rw 43 dB, in accordance with BS EN ISO 140-3., Rw 44 dB, in accordance with BS EN ISO 140-3., Rw 45 dB, in accordance with BS EN ISO 140-3., Rw 46 dB, in accordance with BS EN ISO 140-3., Rw 47 dB, in accordance with BS EN ISO 140-3., Rw 48 dB, in accordance with BS EN ISO 140-3., Rw 50 dB, in accordance with BS EN ISO 140-3., Rw 51 dB, in accordance with BS EN ISO 140-3., Rw 52 dB, in accordance with BS EN ISO 140-3., Rw 53 dB, in accordance with BS EN ISO 140-3., Rw 55 dB, in accordance with BS EN ISO 140-3., Rw 57 dB, in accordance with BS EN ISO 140-3., Rw 58 dB, in accordance with BS EN ISO 140-3., Rw 60 dB, in accordance with BS EN ISO 140-3.