Measurement Guide

Friendly reminder: For custom wooden ventilation windows and blinds, please provide the clear opening dimensions of the window or door in millimeters. Measure at multiple points and use the smallest measurement.

Measuring tool

It is recommended to use a steel tape measure and to report measurements in millimeters (mm) to ensure accuracy.

Timing of measurement

Measure only after the walls, floors, and openings have all been completed to prevent dimensional discrepancies later on.

Measurement location

Width: Measure at three positions—top, middle, and bottom; Height: Measure at three positions—left, center, and right; Thickness: Measure the window frame or wall thickness.

Value Rule

All dimensions are taken as the minimum values to ensure proper installation of the product.

Precautions

Confirm that the opening is square and free of any tilt; provide adequate clearance for installation and adjustment; if there are special shapes or non-standard dimensions, mark them clearly.

Submission Requirements

Please provide clear photos of the opening along with measured dimensions to enable us to quickly verify the order and ensure precise production.