Product · Combination Fixed + Sliding + Casement · One frame

Combination uPVC
for villas balconies wide openings farmhouses

When one window isn't enough. We engineer fixed, sliding and casement panels into a single frame — letting you fit a 4-metre opening with the right mix of light, ventilation, and view.

See configurations
₹380+
Per sq.ft
4 m
Single-frame width
∞
Panel arrangements
Mason combination uPVC window installation
From₹380/ sq.ft
₹380+
Starting / sq.ft
3 types
Fixed · Sliding · Casement
4 m
Max single-frame width
5 — 12 mm
Glass thickness
12 day
Fabrication time
Anatomy

One frame. Many windows

A combination window looks like a single elegant opening but is engineered as multiple panels joined by structural mullions. Five details decide whether it stays true and tight over the years.

Mason uPVC combination installation — L-section 3-track rooftop enclosure with fixed transoms and sliding panels
  • 01

    Structural mullion

    The vertical (or horizontal) bar where two panels meet. We use a reinforced uPVC profile with embedded galvanised steel — it has to carry the load of both panels for forty years.

  • 02

    Fixed-panel module

    The largest, cheapest, tightest-sealed part of the frame. Used to fill the panels on either side of the operable centre — full glass area, no moving parts.

  • 03

    Operable centre

    Where ventilation happens. Drop a sliding or casement panel into the middle of the frame — the mullions support it on both sides without compromising the operable mechanism.

  • 04

    Continuous EPDM seal

    The gasket runs continuously around the perimeter and at every mullion-to-panel joint. Each panel seats into its own seal — no leaks where panels meet.

  • 05

    Mixed glass spec per panel

    Fixed panels can carry 8mm toughened for safety, while operable panels use lighter 5mm clear or tinted. Each panel within the combination is specced for its own role.

Configurations

Four ways to mix the panels

The combination logic is letter-coded — F for fixed, S for sliding, C for casement. Four standard layouts cover most projects; everything else is bespoke.

F · S · F

Fixed-Sliding-Fixed

Central sliding flanked by two fixed panels. Maximum daylight, practical ventilation in the centre. The South-India bestseller.

From ₹380 / sq.ft
F · C · F

Fixed-Casement-Fixed

Casement-leaf centre with fixed sidelights. Full ventilation when the centre swings open, premium airtight seal when closed.

From ₹450 / sq.ft
F · S · S · F

Four-panel sliding

Two fixed outside, two sliding inside. Slide both centres aside for the widest possible opening through the middle.

From ₹420 / sq.ft
Bespoke

Custom layout

Mix and stack panels however the elevation needs. Two-storey panels with an operable strip below, T-shapes, L-shapes — priced per project.

On request
Where it goes

Best openings for combination

Combination shines where a single window can't span the opening — typically anything wider than 1.8m or with a unique elevation requirement.

Villa elevations

Two-storey or wide ground-floor openings where the architecture needs uninterrupted glass with a discreet operable centre.

Balcony enclosures

Convert an open balcony into a usable room with a combination of fixed walls and sliding doors — common Hyderabad apartment retrofit.

Wide living rooms

Living rooms facing a garden or pool benefit from FSF — view through the fixed panes, breeze through the sliding centre.

Farmhouses

Bespoke layouts spanning 3–4m, often with toughened glass for security and tinted lower panels for privacy from the garden.

4m
Maximum single-frame width

A Mason combination window covers an opening up to four metres wide in a single fabricated frame — no on-site joints, no compromise on the seal. Beyond 4m we'll engineer a multi-frame system specced to your wind-load profile.

Why Mason

Three reasons combinations stay aligned with us

Combination windows fail at the joints — where one panel meets another. Mason engineers those joints, then tests them.

01

Steel-reinforced mullions

Every dividing mullion has galvanised steel reinforcement embedded inside the uPVC. The frame stays square even when the building settles or a wind load pushes one panel.

02

Pre-assembled in workshop

We assemble and test the full combination at our Patancheru workshop before despatch — including running the sliding/casement leaves. Issues are caught here, not at your wall.

03

One installer, one day

A 4m combination is one frame, not three windows joined on site. Our team installs it in a single day, square the first time. No follow-up visits to align panels.

Pricing

Factory-direct combination rates

Starting prices below — final cost depends on the panel mix, glass type, hardware grade, and any reinforcement needed. We send a written estimate within 24 hours.

F · S · F
From ₹380 / sq.ft
Fixed + sliding + fixed. The bestseller.
F · C · F
From ₹450 / sq.ft
Fixed + casement + fixed. Premium air-seal.
Four-panel
From ₹420 / sq.ft
F·S·S·F — widest opening through centre.
Toughened
+ ₹80 / sq.ft
Mandatory above the 4th floor.
Bespoke layout
On request
T-shape, L-shape, two-storey, anything else.

Final price varies with panel mix, profile brand, glass thickness, and reinforcement needs. Request a tailored combination estimate →

What owners say

Combination owners. One standard

What people who chose Mason combination installations told us about the result.

5★
★★★★★
300+ verified Google reviews
★★★★★

"Mason uPVC Vizag provided a very smooth experience from consultation to installation. Knowledgeable, responsive, focused on quality. Execution matched the Hyderabad standard."

V
Vamsi Krishna K.
Jan 2026 · Vizag
★★★★★

"Simply awesome quality delivered on time. Services beyond expectations. I highly recommend Mason uPVC. No words — just 5 stars!"

S
Sudhakara Rao N.
Sep 2022 · Hyderabad
★★★★★

"Best quality, best price, easy to work with. I engaged Mason based on a reference and couldn't be happier."

C
Chandra GKS
Sep 2022 · Hyderabad
FAQ

Combination, answered

Common questions homeowners ask before ordering combination uPVC. If yours isn't here, ping us — we reply in under a day.

What are the most popular combination configurations?

The most popular in South India is the Fixed-Sliding-Fixed (FSF) — a central sliding panel flanked by fixed glass. This gives maximum daylight with practical ventilation through the centre. For premium projects, Fixed-Casement-Fixed (FCF) is increasingly common.

How wide can a combination window go?

Mason combination windows are fabricated up to 4 metres wide as standard. Beyond that, openings need a uPVC mullion (vertical structural bar) every 2–2.4 metres. Very wide openings may need steel reinforcement inside the profile — our team will spec it during the site visit.

Can I mix glass types within one combination window?

Yes — and often you should. Fixed panels can use 8mm toughened for safety at full height, while the operable sliding/casement uses 5mm clear or tinted for weight. Each panel within the combination can carry its own glass spec.

Are combination windows suitable for high floors?

Yes, with appropriate glass. For floors above the 4th, we recommend toughened glass (8mm minimum) on all panels — fixed and operable. Our team will specify the right glass thickness for your floor level and the building's wind-load profile.

How long does a combination window take to make & install?

From order confirmation: 10–14 days for fabrication (one to two more than a standard window because of mullion assembly and QC), then a single day on site for the install. The whole frame is delivered pre-assembled — no on-site joining.

Get in touch

Free combination estimate in 24 hours

Tell us the opening size, the preferred panel mix, and the city. We'll come back with a tailored combination quote.

Let's span
the whole opening

Combination consultations are free across Hyderabad & Visakhapatnam. We measure on site, confirm panel layout, and quote in writing within a day.

Hyderabad+91 93479 86085
Visakhapatnam+91 93465 86085
Emailmasonupvc@gmail.com
WhatsAppChat with us now →

Request a combination estimate

Our team will reach out within 24 hours with a tailored quote.

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Free combination consultation in Hyderabad & Vizag