Wren Kitchens Infinity Plus Base Unit Fittings Manual page 4

Cutting the groove
Use a Stanley knife to make a small square
cut at the top of the groove on the back of the
unit.
This is to allow for the back panel to slide out.
Removing the back panel
Slide the back panel up and out of the unit
and place the panel on a supported surface.
Drilling the ducting cutout
Drill into the corners of the ducting template,
ensuring to stay within the marking.
Page 4