Timber-aluminum 78

Our lift & slide system with all-glass look. In contrast to HST 2.0, the fixed glazing is floor-to-ceiling and the threshold in the passage is completely level with a zero-barrier threshold (0 mm threshold height).


The HST 3.0 highlight: zero-barrier threshold and floor-to-ceiling glazing

  • Water cannot penetrate from outside due to sophisticated drainage system
  • Even more light due to maximum possible floor-to-ceiling glazing of the fixed element
  • Extravagant look from the inside and outside
  • Woods and surface finishes can be chosen individually
  • High soundproofing, insulation and waterproofing values due to ingenious all-round sealing system
  • Burglar-proof thanks to additional anti snap security devices between the fixed element and sliding sash as well as optional fitting upgrade with steel swivel hook
  • Smooth and quiet running – even with heavy elements
  • Safe to operate
  • Extremely sturdy construction – functionally reliable and durable as a result

Available construction diagrams

The lift & slide elements in the HST 3.0 series are available in the design versions shown above.



Outside HST 3.0 timber-aluminum

Aluminum shells with welded corners

The corner joints are not simply cut to miter and put together, but are seamlessly welded and ground before the surface coating. This elaborate process ensures an impeccable look and perfect weather resistance and durability.

Zero-barrier threshold in the passage

The HST 3.0 threshold system is designed as a zero-barrier threshold (threshold height 0 mm). So the transition is completely even, on exactly the same level!

Floor-to-ceiling glazing of fixed elements

View from the outside into the frameless, floor-to-ceiling glazing of the fixed element. This visual highlight allows for maximum incidence of light!


Inside HST 3.0

Interior view of the floor-to-ceiling glazing

The top running rail is recessed flush.

The HST 3.0 shines at the bottom with floor-to-ceiling glazing of fixed elements

Flush recessed running rail at top

The top running rail is recessed flush



High functional reliability and ease of movement due to high-quality roller bearing construction.

A newly developed sealing channel with overlapping construction ensures excellent, durable waterproofing

Smooth running and permanently stable

The sliding sashes are very smooth-running and quiet to operate thanks to high-quality HS 400 tandem carriages with 4 rollers and 400 KG load capacity 

Absolutely tight with Airstop sealing pad and sealing filler piece

A special sealing pad ensures the best possible waterproofing between the sliding and fixed sashes as well as the drainage shaft.


A sealing filler piece on the closing side ensures maximum sealing performance.

Completely circumferential seal

The high-quality circumferential multi-chamber seal ensures absolute waterproofing and air tightness and thus also excellent insulation

Stopper on sliding sash

Stoppers on the sliding sash ensure the safe operation even of heavy elements.

Concealed version with stainless steel cover

Top security

Locking system equipped with 4 bolt locks as standard – for improved burglar resistance.

4 steel swivel hooks – resulting in maximum burglar protection. Hooks engage into the locking part behind and do not protrude when the door is open.

Security class RC 2 with three anti snap security elements that engage behind (standard just with one centrally arranged anti snap security element)
The additional anti snap security devices between the fixed element and the sliding sash ensure even greater burglar protection.

Integrated concealed soft close damper

The soft-close | soft-open damper gently brakes the sash before it stops when it is opened or closed energetically. This function increases safety and avoids impact noises

HST 3.0 threshold and drainage system

  • Accessible flush threshold | zero barrier / threshold height 0 mm - thermally separated
  • Floor-to-ceiling glazing without visible frame for fixed glass elements
  • Drainage grate system – with inner grate in the passage and outer circumferential grate – drains the water downwards in a controlled manner
  • Drainage mat (blue) drains the water in a controlled manner and the sealing membrane is welded waterproof
  • Individual layered patio structure

Drainage system absolutely essential with the HST 3.0 system!
The DÖPFNER scope of delivery includes the inner drainage grate in the sliding elements’ passage.
The external, circumferential drainage grate system and the individual patio structure are designed, supplied and installed by external suppliers! 


Zero-barrier solutions often need to be very individually adapted to a construction project. Often, no clearly applicable DIN/EN standards (recognized rules of construction engineering) exist for special situations. Technical innovation regularly progresses faster than the 5 to 10-year updating cycle for common regulations. Existing standards prescribe a threshold height of 15 cm, which is of course by no means “accessible”! 
Customized design versions are referred to as SPECIAL CONSTRUCTIONS in construction practice: Components and/or services are planned and implemented with the utmost care according to the current state of construction engineering, but there is no standard form of execution as per DIN/EN.

This means that customized solutions for the property are agreed between the contractor and the client. Information and clarification about the special construction are provided by the contractor and need to be contractually agreed in writing between owner builder, planner and contractor.

To guarantee permanent waterproofing, the patio structure must be designed in such a way that rainwater is drained off in a controlled manner via a drainage system. The national standards regarding exterior drainage (beyond Döpfner components) must be complied with.
In the event of non-compliance, the DÖPFNER warranty does not apply to these components!

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