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Differences between 3CF and 3CK

3CF and 3CK series offer the same performance, construction, and lengths. The main differences are in their cross-section dimension (see table below). 3CF is more suitable when there is limited clearance between the top of the door and ceiling.

Series Height Depth
3CF 191 mm 294 mm
3CK 220 mm 220 mm

 

Minimum recommended overhead clearance is 240 mm for 3CF (versus 270 mm for 3CK).

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