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4000 Extra Heavy Duty (Tandem) Door Closers
4000 Extra Heavy Duty (Tandem) Door Closers
4040XP-TANDEM Series
In general terms all Relcross heavy duty overhead door closers are capable of controlling conventional doors up to 136 kilos in weight although it must be further borne in mind that all doors must be free swinging; the correct choice of hinges and pivots being a critical prerequisite.
Where doors exceed the 136 kilo limit, a proven custom solution exists. Developed over many years the 4040XP.TANDEM Overhead Door Closer comprises two heavy duty cylinders linked to produce considerable power without any loss of control and suits doors up to a 272 kilo maximum. Additional cylinders can be introduced for extra heavy doors in excess of 272 kilos.
