SD2421-OX Aluminium Sliding Door – 2400 x 2100mm
The SD2421-OX Aluminium Sliding Door is a standard 2400 x 2100mm sliding patio door from our Icon Series. Featuring a two-panel OX configuration with one fixed and one sliding panel, it provides generous natural light, smooth access and a clean contemporary finish.
If you’re looking for an aluminium sliding door for sale, the SD2421-OX is ideal for lounges, dining rooms, patios, entertainment areas and other spaces opening onto gardens and outdoor living areas.
Standard South African Aluminium Sliding Doors for Sale
At 2400mm wide x 2100mm high, the SD2421-OX is a popular standard size for South African homes. Its horizontal sliding operation saves space while the large glass panels provide excellent views and natural light.
For customers comparing standard South African aluminium sliding doors for sale, this model offers a practical combination of size, durability and modern styling.
Sliding Aluminium Patio Doors for Sale
Our sliding aluminium patio doors for sale are designed to create an easy connection between indoor and outdoor spaces. The SD2421-OX features a durable aluminium frame, safety glazing and reliable sliding hardware for everyday residential use.
Key Features
- Size: 2400mm wide x 2100mm high
- Configuration: OX – one fixed and one sliding panel
- Durable aluminium construction
- Large glazed panels
- Smooth, space-saving sliding operation
- Suitable for new homes and renovations
- Available in Natural Anodised (Silver), Bronze, Charcoal, White and Black
- Supplied complete with safety glass, handle, lock, cylinder and keys
Buy an Aluminium Sliding Door for Your Patio
The SD2421-OX 2400 x 2100mm aluminium sliding door is an excellent choice for customers searching for an aluminium sliding door for sale or comparing sliding aluminium patio doors for sale. Its standard dimensions, generous glazing and practical OX configuration make it suitable for a wide range of South African homes.
Aluminium Sliding Doors and Patio Doors by Sigmadoors Online
- All measurements on images are nominal opening sizes. Actual door frame sizes are 10mm less.
- All our doors come fitted with safety glass.
- Our sliding doors are fitted with wool pile to keep dust and water out.
- Our sliding patio doors are very easy to operate. The sliding rails ensure the panels slide smoothly and silently.
- Doors have a pleasant slimline, discreet architectural appearance and have a long lasting finish.
- Sliding doors allow remarkably large openings, breaking the boundaries between the indoors and outdoors.
- Sliding doors allow plenty of ventilation into your home and let you enjoy the cool summer breezes.
- Our High quality aluminium patio doors are constructed from extruded aluminium alloy.
- Glazed with standard safety glass as prescribed by Glazing Regulations.
- Our sliding patio doors are manufactured to comply with minimum performance requirements of 600Pa wind loads (Inland areas). Heavy duty lock stiles are fitted where required by regulation.
- The patio doors are commonly used for residential and other architectural projects.
- All sliding doors come complete with fixing hardware, locks and metal screws.
- Aluminium sliding doors are low maintenance, have durable handles and rollers for a smooth and silent operation
Why Choose a Sliding Patio Door?
Sliding patio doors are particularly popular because they combine large areas of glazing with simple horizontal operation. Unlike hinged doors, they do not require additional space for the door leaf to swing inward or outward.
This makes the SD2421-OX a practical solution where you want to maximise natural light, maintain views of the garden and create convenient access to outdoor areas without sacrificing usable floor space.

























