Double frame wood aluminium window POLARIS

Durable, energy efficient and easy to maintain Fenestra Polaris windows are an excellent option for any home. This is tilt and turn double framed wood aluminium window with quadruple glazing. The architraves are covered with aluminium profiles and the outer frame is made of aluminium. The windows can be ordered and fitted with air vents, mosquito nets, venetian blinds, ventilation frames and hatches as well as decorative edging. The model comes in a variety of finishing options. All our products are tested by approved test labs.

Wood aluminium window POLARIS

  • U value up to 0,70 W / m²K
  • Durable and easy to maintain
  • Made of high-quality materials compliant with quality standard EVS-EN 14351
  • Selective glass insures world class thermal insulation
  • Windows are custom made based on clients’ measurements and in compliance with the ISO 9001 quality system.


Wood has been selected and processed based on quality standard RT 103241. Architraves are made of glued laminated timber (pine) with at least three layers using weatherproof glue D4. Window frames are made of knotless pine and there are no finger joints on the visible stained/glazed surface.


Weatherproof and easy-to-maintain aluminium parts are powder coated or anodized. There are a wide range of colour options, ask for further information.


The outer frame uses glass thicker than 6 mm to ensure better sound insulation. The frame on the inside is equipped with double SFS standard glazing.
The inside frame uses double glazing with selective surface, filled with argon gas. 4 mm glass is the standard choice for the outer frame.
Safety glasses, glazing for improved sound insulation and reduced solar radiation effect available with special orders.

Technical specifications of product


Standard architrave depth options 130 mm, 170 mm and 210 mm.
Recommended frame area 3 m², recommended architrave area 6 m²
Larger dimensions available for special solutions.

Insulation: ?

U-value with standard glass 0,72
U-value with special glass 0,70
test measure 1 190 x 1 190 (EES Oy)

Sound insulation: ?

Standard glass
Rw = 44-47 dB
Ctr = 39-43 dB


We use TPE sealants.

Surface finish:

Wood details are coated in our factories with weatherproof paints (RAL), stains or lacquers (AkzoNobel TINTEX). There are a wide range of colour options.


Double frame wood aluminium window POLARIS

Fenestra products come with handles and anti-closure latches included as standard. We can also provide you with suitable handles with a child lock for the windows and balconies that you need. There are a wide range of different models: explore our standard range below and find the right one for you.

Double frame wood aluminium window POLARIS

Fenestra windows and balcony doors come in a wide selection of colours. Check out a suitable RAL or RR catalogue for preferred colours and the Akzo TINTEX catalogue for a preferred stain.

Double frame wood aluminium window POLARIS

Both wood and wood-aluminium windows can be ordered in varying shapes and sizes. You can have rectangular, square, triangular, round, trapezoid, angled or arched windows. Whatever suits you best!

Double frame wood aluminium window POLARIS

Window glazing can serve as a decorative element in the home or, where necessary, obscure the view from the outside or the inside. For example, Satinovo glass is an excellent choice for washrooms as it lets in light while shielding you from the eyes of outsiders. We offer something for everyone.

Double frame wood aluminium window POLARIS

Mosquitos, flies and other unwelcome guests tend to be a problem in spring and summer, this is where an insect screen comes in handy. The screen can be set up on the inside and added to windows that open.

Double frame wood aluminium window POLARIS

Stylish venetian blinds that match your home’s decor make life as convenient as possible. We recommend ordering them with the windows, as they are much more costly and time-consuming to install later.

Double frame wood aluminium window POLARIS

Air vents help ensure functioning ventilation in your home by keeping indoor air fresh and healthy. The vents are designed to mix outdoor air with the warm indoor air in the upper part on the room, thereby avoiding draught.