we have many "L"refers to the length size, may according to the customer request manufacture, Mainly uses in the central spatial mode home use wall hanging air conditioning extension telephone

Demation(mm） length blade Noise (dbA）
high middle low
60 ——290 24
80 ——860 30
90 ——860 32 《40 《35 《30
100 ——860 36
120 ——860 40