| Glass thickness | Specify the exact glass thickness in millimetres, such as 6, 8, 10, or 12 mm. | Choose a bracket designed for the measured glass thickness. Clamp-style brackets may have a defined thickness range; do not assume one model fits every size. | Compatible thickness range, adjustment method, and confirmation that the glass-contact surfaces will not damage the glass. |
| Glass type and edge finish | Identify whether the shelf is made from annealed, heat-strengthened, or fully tempered glass, and specify polished or otherwise finished edges. | Match the bracket installation method to the glass specification. Any holes or cut-outs should be planned before glass is tempered. | Glass compatibility, required hole or cut-out dimensions, and installation instructions for the specified glass. |
| Shelf dimensions | Provide the shelf width, depth, shape, and intended overhang beyond each support. | Bracket spacing and shelf projection affect stability. Confirm the support layout for the actual shelf dimensions rather than selecting by appearance alone. | Recommended bracket spacing, suitable shelf dimensions, and any restrictions on overhang or projection. |
| Load requirement | State the intended load per shelf and whether it will be evenly distributed or concentrated in particular areas. | Ask how the stated capacity was determined. The wall, anchors, bracket spacing, glass, and installation quality all affect the finished shelf's capacity. | Test method, rated load conditions, recommended safety margin, and whether capacity is specified per bracket or per pair. |
| Mounting surface | Identify the substrate, such as solid concrete, brick, timber framing, or a stud-supported wall. | Select fixings appropriate to the substrate. A bracket's capacity alone does not establish the capacity of the complete wall-mounted installation. | Recommended fixing type and size, substrate limitations, and installation guidance. Confirm whether fixings are included. |
| Bracket configuration | Choose between a glass clamp, a support with a locating lip, or a design that requires drilled glass, depending on the application. | Clamp designs can avoid drilling the shelf, while drilled designs require accurately positioned holes prepared before tempering. | Drawings, dimensions, installation method, and confirmation of whether drilling or other glass preparation is required. |
| Material and finish | Specify the visible material and finish, such as stainless steel or plated metal, and the desired appearance. | For damp locations, check the material grade and finish suitability for the actual exposure. Appearance alone does not establish corrosion resistance. | Material specification, finish description, care instructions, and available samples for colour and surface review. |
| Installation environment | State whether the brackets will be used indoors, in a bathroom, near a kitchen sink, or in another exposed environment. | Moisture, cleaning products, and salt exposure can affect material and finish performance. Specify the environment before requesting a quotation. | Recommended applications, environmental limitations, and any maintenance requirements. |
| Quantity and packaging | Provide the required number of brackets, shelves, or complete sets, along with any spare-part needs. | Clarify whether the quoted unit is one bracket, one pair, or one installation set to avoid quantity and price misunderstandings. | Quotation unit, minimum order quantity, packing configuration, and spare-part availability. |
| Quality and documentation | List the inspection records, material information, drawings, or test documents required for your project. | Set acceptance criteria before production, including dimensions, finish, glass fit, and any agreed load-test conditions. | Product drawings, inspection records, material documentation, and relevant test reports applicable to the offered model. |
| Order and delivery requirements | Specify the required order quantity, delivery destination, target schedule, and packaging needs. | Request a written quotation that separates product cost, tooling or sample charges, packaging, and shipping where applicable. | Production lead time, sample lead time, packing details, quotation validity, and delivery terms. |