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The Vents PO 400 window ventilator is a supply valve for constant ventilation and is designed to provide residential and non-residential premises with fresh air. Such a supply valve can be installed in window frames of various sizes in apartments, cottages, and office buildings.
In modern residential buildings, special attention should be paid to organizing air exchange. Ventilation problems that arise simultaneously with the use of hermetically sealed windows cannot be solved with old technical means designed for the flow of outside air through numerous cracks in the windows.
The supply valve for a plastic window is a supply device for constant ventilation and is intended for providing residential and non-residential premises with fresh air. Such a supply valve can be installed in window frames of various sizes in apartments, cottages, and office buildings. Particularly ideal where a constant supply of fresh air is required. The supply unit eliminates the need to open windows, while maintaining access to fresh air without drafts and street noise.
The specially designed design of the ventilator ensures its convenient use, and the built-in dust filter will ensure the flow of clean air into the room.
How natural ventilation works
In a city apartment in a multi-storey residential building, ventilation can be organized using the following example. Mechanical exhaust ventilation systems using natural air flow are designed with exhaust fans installed in the kitchen and bathroom. The flow of clean air into living spaces (bedroom, living room) is carried out through window ventilators. As it becomes polluted, the air escapes through the internal apartment doors into the bathroom and kitchen, where it is removed by exhaust fans.

Ventilator design
The Vents PO 400 ventilator consists of an external visor, a filter and an internal grille with adjustment. The external canopy prevents water from entering the room and is equipped with a mosquito net to protect against insects. Filter – cleans the supply air from dust and dirt, retains excess moisture and reduces street noise. An adjustable internal grille allows you to adjust the volume and direction of the supply air.
Adjustment
The supply valve is equipped with a built-in regulator that allows you to change the intensity and direction of the air flow to obtain the most comfortable microclimate.
![]() | 1. The regulator is in the position 'open(center)'. Supply air enters the room in all directions.
2. Controller in position & #039;open down'. Supply air enters the room only in the downward direction.
3. The regulator is in the position 'open up'. Supply air enters the room only in the upper direction.
4. The regulator is in the 'closed' position. Supply air does not enter the room. |
Inlet valve performance diagram

Installation example
The supply valve is installed in the upper part of the window frame. Maximum air flow - 20-40 m3/h.

Overall dimensions
Payment terms and order preparation
At DOMIS.PRO, we offer different payment terms depending on the product type, its availability and the characteristics of each order.
Different payment arrangements may apply to products in stock, made-to-order items and custom-manufactured products.
Any required deposit, payment deadlines and preparation or manufacturing conditions will be communicated to the customer before the order is confirmed and stated in the quotation or relevant contractual documentation.
Payment methods
Available payment methods may include:
- Bizum.
- Apple Pay.
- Visa and Mastercard bank cards.
- SEPA bank transfer.
- International SWIFT bank transfer.
The availability of each payment method will be indicated during checkout or in the relevant quotation.
Bank transfer details
Beneficiary: Domis Iberica Pro S.L.
NIF: B16460271
VAT identification number: ESB16460271
The bank details required to make a transfer will be provided on the invoice, quotation or order confirmation.
We recommend including the order number or quotation reference in the payment description.
VAT and invoicing
Prices and taxes are applied in accordance with current tax legislation.
Certain intra-Community supplies and exports outside the European Union may be exempt from Spanish VAT when legal requirements are met and supporting documentation is available.
Delivery outside Spain does not automatically qualify for VAT exemption. The applicable tax treatment will be determined before the order is confirmed.
Delivery and transport
Products may be delivered using DOMIS.PRO's own transport or through specialised transport companies and logistics operators.
Shipping costs, delivery times and transport conditions depend on the destination, product availability, dimensions, weight and characteristics.
This information will be communicated to the customer before order confirmation or included in the relevant quotation.
Bulky products and special deliveries
Some products, such as large-format SPC and WPC decorative panels, profiles, windows, doors and pergolas, may require specialised transport or specific unloading arrangements.
Where additional services are required, such as lifting equipment, special unloading or access by specific vehicles, the conditions and costs will be communicated to the customer in advance.
Order collection
Collection of products from our premises may be arranged when this option is available and has been confirmed in advance by DOMIS.PRO.
The collection location, date and time will be agreed before handover.
Payment and delivery enquiries
If you need information about payment terms, availability, transport or product delivery, please contact our team.
Domis Iberica Pro S.L.
NIF: B16460271
Address: Av. de la Pau 45, puerta 24B, 46730 Gandia, Valencia, Spain.
Email: info@domis.pro
