What contractors, owners and designers should look for before requesting pricing: mark, size, type, glass, finish, DP and notes.
The opening mark
Marks like W1, W2, D1 or SGD-3 connect the schedule to floor plans and elevations. Keep those marks intact when requesting pricing so questions can be traced back to the drawings.
Size and configuration
Confirm whether dimensions represent rough opening, frame size or nominal unit size. Note fixed versus operable panels, handing, pocket/corner conditions, transoms and sidelites.
Performance
Look for design pressure, impact designation, energy values, egress, fire/life-safety notes and product approval references.
Selections
Frame finish, glass tint/Low-E, hardware color, threshold and screen requirements should be carried into the quote assumptions.
Use elevations too
The schedule rarely tells the whole story. Elevations and wall sections reveal mulled combinations, structural divisions, pockets, sill recesses and architectural intent.
Technical guides are educational. Current approvals, engineering, manufacturer documents and the project drawings govern the final product and installation.