Weather seal recessing sets from Trend. Ref.330 and 331 are designed to rout gaps for accommodating the popular Exitex Aquatex P6 or Schlegel Aquamac 63 weather strip systems. They allow for a particularly slim gap between the sash & frame. The slot can be located part way down the side of the rebate, or at the bottom.
No guide bearing is included with Ref. 330.
Ref. 331 is supplied with a guide-bearing that reduces setting-up time.
MEC mechanical feed only.