With this configurator you can buy custom sized frames that can be assembled using inner brackets or corner connectors.
Please be aware, that the profile lengths are calculated without the thickness of cover caps (as they are not necessary to use), but the thickness of the corner connectors are calculated into the corresponding profile lengths (as they are necessary to use).
Here you can find all the used inner brackets / corner connectors as separate products with more information about them:
Inner bracket 20 B-Type slot 6 M5 Alternative
Inner bracket zamak (30 B-Type / 40 I-Type) Slot 8 M6
Inner Bracket zinc die-cast slot 10 Alternative
Corner connector 3D 20x20 B-Type slot 6 with screw M4x5
Corner connector 3D 30x30 B-Type slot 8 with screw M6*8
Corner connector 3D 40x40 I-Type slot 8 with M6*12 screw
(The images are only for representation, the seen proportions/mounting options can differ.)