What you need to know.
Size, opening style, panel count, glass, finish, internal frame supports, mosquito mesh and fittings can all change the price. Old-frame removal, transport, access equipment and wall repairs may cost extra. Large openings may need additional design work or different glass.
How to choose for your home.
Ask for an itemised quotation using the same window and door list for every supplier. Compare the proposed product and work included before comparing the total. iTech prices are provided after reviewing the project rather than through a universal online rate.
Find the reason behind a price difference.
iTech quotes after checking the product details and work needed. A rate per square foot does not show whether two quotations include the same window, glass, mesh and fitting work.
On a narrow screen, scroll across the table to compare all columns.
| Price factor | What can differ | How to compare it |
|---|---|---|
| Dimensions and quantity | Opening sizes, number of windows and size of each panel. | Give every supplier the same list of openings and sizes, with units. |
| Opening style | Sliding, hinged or fixed panels, number of tracks and the way panels move. | Compare drawings showing each window closed and open. |
| Glass and solid panels | Type of glass or solid panel, privacy needs and whether it suits the frame. | Ask each supplier to quote for the same glass or panel. |
| Frame and fittings | Frame construction, extra support where needed, finish, locks, hinges and rollers. | Compare the details item by item, as well as the product name. |
| Mosquito mesh | Mesh may be included, optional or separate from the window. | Check the mesh type and whether its price is included. |
| Work at the site | Delivery, site access, old-frame removal, fitting, disposal and wall repairs. | List these items separately and check who handles each one. |
| Quotation terms | Taxes, payment stages, work left out and what the written warranty covers. | Compare the full amount and the work included. |
Example: two quotes that look similar.
Proposal A describes a two-track window without mesh. Proposal B describes a different track layout with an included screen. A lower total for A may not be better value for a bedroom where you need mosquito mesh.
Ask both suppliers to quote for the same design, sizes and glass. Then check that delivery, fitting, old-frame removal and taxes are included on the same basis. Compare the full totals once the differences are clear. Ask for an updated quotation if your choices change.
Share these details for a quotation.
- Include the project location, number of openings and rough sizes with units.
- Attach photographs and mention mesh, privacy and how much space you need to walk through a door.
- Ask for separate, item-by-item quotations if you are comparing different designs.
Your practical checklist.
- Use one window and door list.
- Match glass and hardware.
- Check installation exclusions.
- Include taxes and delivery.
What to share with our team.
Send a photo of the window or door opening and the room around it. Write the approximate width and height in feet, inches or millimetres, and clearly mention the unit. Tell us what matters most: fresh air, privacy, mosquito mesh, easy cleaning or space saving.
The team will confirm the final size, suitable materials, price and installation work. If your project needs an engineer’s approval or special safety requirements, discuss these before placing the order.
Discuss your project with iTech

