Start by confirming dimensions, quantities and the project location. Make sure your supplier and installer are working from the same revision of the drawings.
Review opening directions, frame finishes, glass selections and hardware. Ask which test reports and documentation apply to the actual configuration you are ordering.
Clarify the quotation scope, packing, delivery arrangements, site access and who will carry out installation. Keep written records of any changes.
A product image is useful for design discussion, but it does not replace approved drawings and a detailed order confirmation.
