grooved (adj)

It can also be used to connect the end face of one profile to the grooved side of another profile.

Face Fastening Set 8 is used to create a rigid angular connection between two profiles whose grooved sides face each other.

By drilling the Clamp-Profile Fastener at a prepared point and pressing in a grooved pin, the Fastener and Clamp-Profile Hinge E can also be used for attaching swing doors.