“Clip-on” and “clamp-on” can overlap in product names. Clip-on often describes a spring clip; clamp-on often describes a screw or lever clamp. Neither name specifies the opening, supported load or compatibility with your display. Compare the actual mechanism and dimensional drawing.
Compare how the mount grips
A spring clip closes under spring pressure. A screw or lever clamp lets you adjust its grip within the specified range. Neither is automatically safer or suitable for permanent installation. Jaw shape, contact area, mounting orientation and the fixture’s load all matter. Follow the maker’s tightening instructions rather than assuming more pressure improves security.
Measure the actual supporting member
Record the profile’s width, depth, shape and the dimension captured between the jaws. Check material, wall thickness, contact surfaces, channel geometry and clearance for the screw or lever. A brand such as Octanorm, Maxima or Aluvision does not identify every profile. Confirm that both the mount and the structure support the complete light, including the arm’s leverage; an opening dimension is not a load rating.
Two model-specific examples
The 5W MR16 display light lists a binder-style clamp for poles and frames up to approximately 25mm. This is not a fit guarantee for every 25mm member. The light uses a supplied external transformer and is standalone, not linkable.
The separate square-tube clamp has flat jaws and a recommended clamping dimension up to 31mm. Check the drawing: this does not describe every side of a profile or prove compatibility with the MR16 light. Its interface must match the selected light. Neither example establishes a universal 40mm limit for the range.
Check the complete assembly before use
Disconnect power and keep damaged mounts out of service. Seat the jaws on the approved supporting surface and secure the compatible light following its instructions, without crushing or deforming the frame. Check the assembled light for slipping, rotation and head sag, and route cables so they do not pull on it. Do not attach to graphics or a banner pole whose support capacity has not been confirmed.
For lights over people, have the installer confirm the permitted mounting method and required secondary retention. HSE’s UK event guidance addresses suitable safety wires or chains and independent fixing points for suspended equipment. Use an approved arrangement for the actual light and structure; an improvised tie is not a substitute.
Confirm the configuration before ordering
Compare the display-light range and mounting options. Send profile photos, measured dimensions, light model, mounting height and venue requirements through our contact page. Confirm documents and any linking limits separately for the exact model. Tool-free mounting does not guarantee installation in 60 seconds or acceptance at every venue.