When connecting circular ductwork, Doby Verrolec have one of the best ring systems on the market with the VerroLoc. Manufactured in the UK at the production plant in County Durham, rings can be made from 100mm in diameter up to 2 metres. Produced in both galvanised mild steel and 304L & 316L stainless steel, for more corrosive environments. VerroLoc rings are all Independently tested by BSRIA, proven to work within requirements of UK HVCA Specification DW144.

VerroLoc brochure download