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An aluminium-wood window is often chosen when a project needs an aluminium exterior and a timber appearance inside. The purchasing decision becomes more specific when the room also needs a screen. A screen changes the way someone reaches the glass sash, cleans the opening and positions a blind. Those movements deserve a place in the window schedule alongside the colour and glazing, especially where several rooms share the same interior detailing.

The 135 Aluminium-Wood Thermal Break Casement Window with Screen makes the screen part of the starting configuration. The 72 Aluminium-Wood Thermal Break Casement Window offers another aluminium-and-wood option to discuss with the supplier. Comparing them is most useful when the enquiry describes the complete room-side arrangement, rather than asking for two prices against a rough opening alone.

Start with the screen requirement for each room

Separate openings that need a screen from those that do not. A bedroom window, a fixed living-room pane and a frequently opened kitchen casement may have different requirements even when their visible timber finish should match. The 135 listing explicitly includes a screen. For the 72, ask the supplier to state the proposed screen provision if one is required; its absence from a short product description should not become an assumption about the final quotation.

Draw the sequence of use. Show where the user stands, which handle is reached first and where each moving part sits when open. Request a dimensioned drawing of the proposed glass sash and screen together. Compare that drawing with the finished reveal, any projecting sill, nearby furniture and the space needed to stand comfortably. This is particularly useful when the same window will be repeated across a development with several room layouts.

Coordinate the timber face with blinds and interior finishes

The visible wood surface meets other materials that arrive through different suppliers: plaster, painted trim, joinery and window dressings. Establish which surface controls the alignment before approving the frame. A blind fixed too close to a moving screen can create an awkward operating sequence, while a deep reveal may affect access to the handle. Put the blind position on the same section as the window so both suppliers work from a shared detail.

Ask for a physical timber finish sample and an aluminium colour sample for approval. View the timber beside the actual flooring or cabinetry under the intended room lighting. Record the agreed finish reference and how natural variation will be handled across multiple units. A photograph is useful for identifying a sample, but the retained sample itself gives the purchasing and installation teams a clearer reference when the delivery arrives.

Keep the quoted construction separate from the series name

Both products are presented as thermal-break aluminium-wood windows. The listings also describe connections between the aluminium and timber elements. These are useful starting facts, but the series names alone do not establish the dimensions or performance of a proposed assembly. Request the frame sections, overall depth, glazing build-up and hardware arrangement for the exact unit sizes on the schedule. This keeps a comparison tied to the windows the project will actually receive.

Where the project has thermal, acoustic or weather-performance requirements, include those requirements in the enquiry and ask for supporting information applicable to the quoted configuration. Keep fixed panes and opening sashes identifiable rather than grouping everything under one generic window description. If the supplier proposes a change in glass, frame section or opening layout, have the designer review its effect on the approved junctions before the purchasing team accepts the revision.

Try the cleaning and maintenance routine on a sample

A sample demonstration should include more than opening the glass sash once. Ask how the screen is accessed for cleaning, whether any part is removable and what tools or clearances are needed. Demonstrate the sequence with the proposed handle arrangement. For upper floors or openings above fitted furniture, discuss how the inside and outside glass surfaces will be reached within the project's maintenance plan.

Include the operator's perspective when reviewing hardware. A facility team may need clear replacement references, while a residential client may care most about the everyday opening sequence and the appearance of the handle. Record the agreed parts and request care instructions for the timber, aluminium, seals and mesh. Keeping that information with each window type makes later servicing easier than trying to identify a component from a general catalogue image.

Approve one coordinated package before ordering the batch

Build the final approval package around a numbered opening schedule. Each entry should identify the dimensions, opening direction, fixed and moving sections, finish references, glazing, screen provision and installation detail. Mark whether a sample has been accepted and which drawing revision the price covers. Ask the quotation to distinguish included components from work supplied by the installer or interior contractor, including any trim needed to finish the reveal.

The 135 is a natural starting point when the enquiry centres on its listed screen arrangement. The 72 deserves a separate, fully specified proposal where that model is being considered for the interior scheme. The useful comparison is the approved assembly in each room: how it opens, how the screen fits, how the wood meets the surrounding finishes and how it will be maintained after handover.