A77LS - Aluminum Lift & Slide Doors

Smooth & silent slide action operation

Thermal insulation Uf

> 0,84 W/(m2K)

Air tightness

class 4 PN-EN 12207


class 9A EN 12208

Wind tightness

class C4 EN 12210

The A77LS is an ideal solution for connecting interior space rooms or conservatories with the outside balcony, terrace or garden area.

Providing both a smooth & silent slide action operation, it can bring the benefits of a beautiful day outside, into the living space. In addition, & by way of its design & operation, the A77LS is a great space saving opening & does not encroach the free space beyond the internal or external confines of the frame, without any compromise. Providing excellent weather tightness together with enhanced thermal performance, the A77LS complies with all of the requirements associated with this product type.

Share on facebook
Share on pinterest
Share on linkedin


  • Key features
  • Technical Specifications
  • Performance
  1. durable and slender profiles enable screens of a low-threshold door of the weight of the leaf of up to 600 kg, height – up to 3.2 m and width - up to 3,3 m
  2. a wide range of glazing options, allowing application of double or triple glazed units combined with thermal breaks as well as additional inserts, enable achieving high thermal and acoustic insulation of the door.
  3. for aesthetic values glazing beads come in three options: Standard (rectangular), Prestige (rounded) and Style (shaped)
  4. closed shape of glazing beads and anti-jemmy details provide enhanced security properties without altering any essential constructional elements of the door
  5. unique gasket designs, together with quality hardware, ensure top end weather and air tightness performance
  6. profiles adapted to accommodate a number of manually or automatically operated hardware available on the market
  7. possibility to drive the doors with automatic “LS-Master” mechanism controlled with a push-button or remote contral
  8. safe use of even large and heavy doors thanks to “LS Speed Limiter” mechanism available in the system
  9. a large degree of compatibility with the A86 system creates an aesthetic combination of the A77LS doors with windows, and using the same components in the fabrication process
  10. a wide range of colour schemes allows for arrangement of doors to meet any individual requirements


Depth of frame2 3/8
Depth of leaf2 3/4
Glazing rangeframe: up to 1 5/8
sash: up to 2

Size & Weight Limitations

Maximum size (H×W)H to 94 1-2 W to 49
Max weight lbs286
Air tightnessclass 4, EN 12207
Watertightnessclass 9A, EN 12208
Wind tightnessto class C4, EN 12210
Thermal insulation (Uf)Uffrom 1,4 W/(m²K), Uw from 0,84 W/(m²K)



We offer high variety of Aluminum windows and doors. Every order is custom made according to our customers requirements. Our modern construction solutions make it possible to create extremely large g lazed areas and improve building design and interior décor not available with most of our competitors, for example 25’ W x 9’H lift and slide doors. We have almost an unlimited potential in terms of both colors and their different shades for our aluminium components. Another key benefit for our products are the components utilizing multi point locking. This is achieved through a link gear running around the window sash, which operates pins which in turn lock into keepers located around the perimeter of the sash opening. Depending on the size of sash used, there can be up to twelve locking points on any one sash. In doors a six-point lock is used. This comprises of four compression roller pins, one latch and one dead bolt. All the locks on any one sash are operated by one lever and secured by one key. Further this creates insulating advantage as an even sash seal is achieved as well as enhanced security. Pleae note we can perform the installation or assit our customer in an installation consult capacity.


GET a quote

Eco Windows USA provides top quality window and door solutions in Brass, Steel, Aluminum, Wood and PVC. With a capacity of producing over 5000 windows per day our systems are highly customizable, allowing for almost unlimited possibilities to arrange elevations and building interiors for both residential and commercial use. Our brand of window and door carpentry is produced by combining precisely selected materials, premium German hardware, latest technologies and long-term experience in production. We provide CAD design support as well as complete installation services.