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THERMOFOR HAS THREE BASIC STYLES OF SOLAR OPENERS ON THE MARKET TODAY.
THERMOFOR NEW CLASSIC SINGLE SPRING
SOLAR OPENER
THERMOFOR DOUBLE SPRING
SOLAR OPENER
THERMOFOR LOUVER VERTICAL
SOLAR OPENER
(NO REPLACEMENT CYLINDER AVAILABLE)
 
"WHICH THERMOFOR REPLACEMENT CYLINDER DO YOU NEED, OLD STYLE OR NEW STYLE?"

THIS IS HOW TO HELP IDENTIFY YOUR CYLINDER STYLE
CY0001/L     This was used up to around 2000 and it attaches to the bracket at the opposite end to the adjusting screw. When fitted the cylinder hangs down from the bracket. Also the bracket will usually be aluminum - self colored (silver).
 
CY0002/L    This is the current model. Usually post year 2000. As you will appreciate this cylinder attaches to the bracket at the adjusting screw end and fits inside the two lower arms of the bracket. The bracket is black powder coated.
 
 



 NEW STYLE
 POST 2000






 OLD STYLE
 PRE   2000

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DIFFERENCE
 
       
  DIFFERENCE
 IN NEW & OLD
CHANGE NEW  
TO OLD BY  
REPLACING  
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WHAT ABOUT THIS SOLAR CYLINDER?

Solar Vent Replacement Cylinder

IT FITS THE UNIVENT, OPTIVENT AND THE HALLS RVO


Did You Know? When a window you are trying to open with a univent solar vent opener weighs 33 pounds, ½ the weight (15 lbs) rests onto the opener and the other ½ (15 lbs) onto the hinges.

i.e. A vent window is usually hung with aolar opener and a pair of top hinges.

Therefore, (7 Kg is not exactly = 15 lbs   but = 16 lbs.  And 2 x 16 lbs = appr. 33 lbs).
The exactly measure is 7.5 Kg x 2.2 = 16.5 lbs x 2 for hinges+opener = total 33 lbs.

Not everyone is aware of the difference in weight on the opener compared to the weight of the vent. This is the reason why the lifting rate is shown as 15 lbs., when the oppener can actually raise a 33 pound window when the window itself is attached to a frame by hinges. 

SO : the 33 lbs is the correct figure

Our customer service staff can assist you in selecting the proper accessories for your unique needs.