Not every grower uses these huge "monster" tubes and hoses with giant diameters in his aeration system. Until now, the 125er connections have been a kind of a poor cousin amoung the silencers, because the relatively narrow hoses and tube arent very loud anyway. Now the "crofter" can reduce his noise level even more.
The 125er connection allows to use this steel silencer on smaller exhaust hoses.
You can also insert transition-clutches without problems.
The silencer is filled with rockwool and is ca. 60 cm long.