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10 year guarantee included
4-6 weeks delivery
Our slim line windows have been priced to suit all budgets and designed to resonate with all tastes.
• Internationally trusted locks, handles and hardware
• Strong, Secure, and durable
• Polyamide thermal break for increased thermal values up to: 1.4 W/m2K
• Slim Line Design
Please allow 10mm on either side for tolerance and 10mm tolerance for the overall height.
Mullion Width *
Mullions explained
A mullion is the point where a window panel finishes. You can customise it to suit your liking or leave it as is (for an even window panel distribution/style).
Mullions are calculated from the left of the window (in mm) and take into account the entire width of your bespoke window.
Below are examples of different window styles and from which points the mullions are calculated to and from:
2 Panel Windows
2 Panel Windows will include 1 Mullion. It will be labelled as Mullion A.
3 Panel Windows
3 Panel Windows will include 2 Mullions. They will be labelled as Mullion A and Mullion B.
4 Panel Windows
4 Panel Windows will include 3 Mullions. They will be labelled as Mullion A, Mullion B and Mullion C.
mm - mm
Mullions are calculated (in mm) from the left of the window. Minimum size: 400mm
Frame Colour*
Please choose a frame colour
Hinge Type*
Hinges
Standard Hinge
The standard hinge is the most common hinge used on our casement windows. The standard hinge is made from highly durable stainless steel and has been tested to class 2 (10,000 cycles). The standard hinge used on casement windows cannot be opened fully thus increasing safety.
Easy Clean Hinge
Easy Clean hinges are also made from highly durable stainless steel and have been tested to class 2 (10,000 Cycles). This hinge is most commonly used as a fire escape hinge as it allows to open the window up to a 90degree angle, in case of an emergency. The hinge allows the opening sash to move to the centre to allow easy cleaning of the glass – allowing you to clean both sides of the window.
Handle Colour*
Handles
The Mila Hero handles are modern and stylish with a slimline design.
Push to open, key lockable window handle
Modern, uncluttered stylish design that compliments the rest of the hero range
Rounded lever grip contoured for comfort
Smooth-functioning ergonomic locking button
White
Black
Anthracite Grey
White
Black
Glass Type*
Glass Type
Standard
Normal glass, that is clear and durable. However, when it breaks it will break into large irregular shaped shards.
Toughened
Stronger than standard glass. It is specially curated to increase strength and safety. When broken it shatters into smaller shards.
Laminated
Strongest than both standard and toughened glass. Laminated glass has a laminated layer within the sealed unit which also helps prevent damages and increases security. The laminated layer makes it increasingly difficult to break into compared to standard and toughened.
Glass Variation
Clear A Rated (Double-Glazed)
Clear A Rated (Triple Glazed)
Pilkington Active Solar Control Glass Grey Tint
Pilkington Active Solar Control Glass Bronze Tint
Pilkington Active Solar Control Glass Blue-Green Tint (Self Cleaning)
Pilkington Active Solar Control Neutral (Self Cleaning)
Arctic
Autumn
Chantilly
Charcoal-sticks
Contora
Cotswold
Digital
Everglade
Flemish
Florielle
Mayflower
Minster
Oak
Pelerine
Satin
Stippolyte
Sycamore
Taffeta
Warwick
UPVC Solid Panel
Aluminium Solid Panel
Please choose a glass type
Glass Variation*
Glass Type
Standard
Normal glass, that is clear and durable. However, when it breaks it will break into large irregular shaped shards.
Toughened
Stronger than standard glass. It is specially curated to increase strength and safety. When broken it shatters into smaller shards.
Laminated
Strongest than both standard and toughened glass. Laminated glass has a laminated layer within the sealed unit which also helps prevent damages and increases security. The laminated layer makes it increasingly difficult to break into compared to standard and toughened.
Glass Variation
Clear A Rated (Double-Glazed)
Clear A Rated (Triple Glazed)
Pilkington Active Solar Control Glass Grey Tint
Pilkington Active Solar Control Glass Bronze Tint
Pilkington Active Solar Control Glass Blue-Green Tint (Self Cleaning)
Pilkington Active Solar Control Neutral (Self Cleaning)
Arctic
Autumn
Chantilly
Charcoal-sticks
Contora
Cotswold
Digital
Everglade
Flemish
Florielle
Mayflower
Minster
Oak
Pelerine
Satin
Stippolyte
Sycamore
Taffeta
Warwick
UPVC Solid Panel
Aluminium Solid Panel
Please choose a variation colour
Trickle Vents*
What are trickle vents used for?
If this is for an extension, please read below;
All habitable rooms require 5000mm sq. of equivalent air.
If you have no other means of venting your room (i.e. a brick vent, mechanical ventilation or another window with a trickle vent fitted) then a trickle vent will need to be fitted to your window.
If this is for replacing an existing window, please read below;
If you are replacing an existing window and not changing the structural width of your opening then building regulations do not apply.
If the window you are replacing has trickle ventilation already fitted, then it is a requirement that a trickle vent is fitted on the replacement product.
You may choose to have a vent fitted regardless of if being a requirement, to aid background ventilation.
For all our aluminium windows, if you choose to have trickle vents it will be on an add-on bar (frame extension) which is 20mm high - to be added to the top of the window (this is included in the overall height of your window). On the 20mm frame extension, the trickle vent will then be cut out into it.
For all windows under 2000mm one trickle vent is fitted and for all doors over 2000mm two trickle vents are fitted.
External cill*
External Cill
90mm Sub Cill
The drainage sub cill is found at the bottom of the frame. It protrudes out to allow the water to drip away from the brickwork. When fitted in line with the back of the frame there is a visible overhang of 17mm (for doors) and 20mm (for windows).
150mm Sub Cill
The drainage sub cill is found at the bottom of the frame. It protrudes out to allow the water to drip away from the brickwork. 150mm Sub Cill is the most standard and common sub cill used. The standard size for a normal brickwork aperture is 150mm. When fitted in line with the back of the frame there is a visible overhang of 77mm (for doors) and 80mm (for windows).
180mm Sub Cill
The drainage sub cill is found at the bottom of the frame. It protrudes out to allow the water to drip away from the brickwork. When fitted in line with the back of the frame there is a visible overhang of 107mm (for doors) and 110mm (for windows).
230mm Sub Cill
The drainage sub cill is found at the bottom of the frame. It protrudes out to allow the water to drip away from the brickwork. When fitted in line with the back of the frame there is a visible overhang of 157mm (for doors) and 160mm (for windows).
Our slim line flush casement windows have been priced to suit all budgets and designed to resonate with all tastes. Flush casement windows are available in 4 colours.
The immense strength of aluminium facilitates the slim line design of our windows without comprising on durability, appearance or practicality. Aluminium is lightweight so easily manoeuvred and practically maintenance-free. Our aluminium windows are manufactured from slim thermally broken profiles to ensure maximum glass widths can be achieved. Our windows include multiple rigid rubber seals and draught excluders to ensure that you get nothing but sunlight passing through your doors. windows utilise the latest polyamide thermal barrier technology. This advanced profile technology creates a thermal transmittance barrier between the cold outside and the warm inside. This retains heat, reduces condensation and insulates your property from external noise and weather conditions.
We manufacture and assemble all our products in the UK to guarantee quality, compliance and security. In-house manufacture, state of the art machinery and highly qualified staff ensure that the quality of each window that leaves our factories is nothing short of perfection. Our set-up means that we are able to deliver quality products to you competitive and fast.
If there is a particular size you are after or a design option not provided on the site please contact us on 0203 355 5311 and our consultations team will be happy to help.
Specifications
• U Value: Double Glazed 1.6 W/m2K, Triple Glazed 1.4 W/m2K
• Part L: Yes
• Guarantee: 10-year warranty on factory power coating and 12 months warranty on hardware comes as standard
• Brand: Cortizo
Delivery & Returns
We at Glass Openings will carry out deliveries manufactured by us and will be free for orders that are over £1200.00. Any orders under £1200.00 will incur a delivery charge based on location.
Lead times stated at the time of ordering are not final. All delivery times are from the date we receive a finalised order, online or e-mail and when payment is made in full. Any modifications to the order will more than likely result in a delay to the delivery.
The delivery term varies by product.
Customers have a legal right to cancel orders up to seven days after the order has been placed and can receive a full refund. This statutory period of seven days does not apply on all products as the return and cancellation policy varies by product categories. As the Glass Openings store offers both bespoke and stock items, please read carefully to determine what return and cancellation policy is associated with the product you are ordering.
If you’ve got a question about one of our products. Simply fill out the form below and a member of our friendly customer services team will be in touch shortly.
during checkout
