A perfect fit starts with precise measurements. Please measure the final area you want to cover, not just the opening.
Our products install via Velcro onto your door/window frame. The dimensions you provide will be the exact final size of the product.
Please ensure you have enough flat surface (at least 2–4cm) on your frame for the Velcro.
See at a glance what measurements each product type needs.
| Product Type | Width (W) | Height (H) | H1 | H2 | Opening | Panels |
|---|---|---|---|---|---|---|
| Standard (Center opening) | 2 | |||||
| Extra Large | 3–4 | |||||
| Side opening | 1 | |||||
| Double side opening | ●×2 | 2 | ||||
| Arched door & window | 1 | |||||
| Window screen | 1 |
Two panels meet in the middle. Measure the full frame where the Velcro will be attached.
Take measurements across the top, middle, and bottom of the frame. Write all three down — the smallest value is your usable width. Frames are rarely perfectly parallel; the narrowest point determines fit.
Measure left side, center, and right side from top frame to bottom frame. Use the smallest height. If the three readings differ by more than 5 mm, your frame may be out of level — take note when ordering.
Make a small pencil mark at the center of the top frame. This guides the magnetic closure alignment so both panels meet flush. Measure 5 cm left and right of center to confirm adequate Velcro surface on each side.
You will enter:
Width (W) × Height (H)
Use the smallest of your three width/height readings. Round to the nearest mm.
Large center-opening door. Same as Standard: measure the full frame. If width exceeds 150cm, the calculator will suggest additional panels for a perfect seal.
Use the three-point measure method (top/middle/bottom). If width exceeds 150 cm, the calculator will flag it as 'Extra Large.' Record the smallest width — oversized screens amplify even minor measurement errors.
3 panels = wider pass-through opening (better aesthetics). 4 panels = more support points, less sag over time (better durability). The calculator will suggest a configuration based on your width; you can override it.
Large screens put more tension on the adhesive. Ensure you have at least 3 cm of flat frame surface on all sides. Less than 3 cm risks the screen pulling away from the frame over time.
⚠ Minimum 3 cm flat surface required for reliable adhesion on large spansYou will enter:
Width (W) × Height (H) — and optionally number of panels
Width > 150 cm triggers the multi-panel layout. Override panel count if you prefer more/less segmentation.
One panel opens to the left or right. You need the total frame size and the width of the side opening (passage space).
Stand outside facing the door. Is the opening on your left or right? That determines the 'open side' you will specify in the calculator. Left and right are swapped when viewed from inside vs. outside — always use the outside-facing perspective.
Same three-point method as Standard. Measure the complete frame width and height where Velcro will attach across all four sides. Use the smallest readings.
From the center magnetic split line to the opening-side edge of the frame — this is the pass-through width when the curtain is open. Ensure the fixed side is at least 15–20 cm wide for stable magnetic closure.
⚠ Fixed side < 15 cm may cause the magnetic seal to weaken over timeYou will enter:
Width (W) × Height (H) × Side opening — and opening side (left/right)
Opening width must be less than total width by at least the fixed-side margin (15–20 cm).
Two panels open from left and right. Measure the total frame and the width of each side opening.
Measure the total width from the leftmost to the rightmost edge of the frame, including any center post or stile where the two doors meet. Height is measured as usual — three vertical points, smallest wins.
Default is 50/50 (equal split). If one side is narrower (e.g., a service door next to a main door), adjust the ratio to 60/40 or 70/30. The calculator's center split line moves automatically to match your ratio.
If a center post exists between the two doors, measure its exact width. The calculator subtracts this from the total before splitting the opening, ensuring the magnetic closures on each side seal properly at the center.
⚠ Include the center post width in your total measurement — do not measure around itYou will enter:
Width (W) × Height (H) × Double side opening
Left and right percentages must add up to 100%. Center post width can be 0 if there is no post.
For arched openings, we need an extra measurement for the curve: peak height (H1) and side height (H2).
Full width of the arched frame at its widest — usually at the bottom or the spring point of the arch. Measure in three horizontal positions and take the smallest. The arch shape is sensitive to width errors.
From the bottom of the frame to the highest point of the arch. This is the total height including both the straight section and the curved arch above it.
From the bottom of the frame to the point where the straight vertical side meets the arch curve. This marks where the arch begins. A small error in H2 significantly changes the arch profile — measure twice.
⚠ H2 is critical. The difference (H1 − H2) determines the arch rise. Over-measure if unsure.You will enter:
Width (W) × Peak height (H1) × Side height (H2)
H2 must always be less than H1. The arch rise = H1 − H2. A larger difference = a taller arch.