This latest development from Kömmerling is based on an installation depth of 88mm with a flush mounted 5-chambered sash and frame design.
The typical U-value of the door is 1.2 W/m2K, though a Passivhaus standard of 0.8 W/m2K can be achieved.
It’s also capable of a width of 6.5 metres with a sash height of 2.9metres with just two sashes, a true large span lift and slide patio door system.
Sound insulation values as high as 45db are achieved with PremiDoor 88 and it’s already been tested by ift Rosenheim for its tightness against driving rain achieving a rating of 750 Pa, with similarly impressive results for wind loading.
PremiDoor 88 is available in white, over 40 woodgrains and coloured foils and with the innovative AluStar exterior cladding system.
In addition, PremiDoor 88 is available with the pioneering proCoverTec surface technology that was launched last year at Fensterbau.
This unique and innovative surface finish offers a slightly textured satin finish in either one face or on both faces and through the glazing rebate. There are 22 different colour options.
The PremiDoor 88 system has also been designed and engineered with a ‘Lux’ variant which does without the need for a fixed sash.
Instead, it features a fixed mullion and large fixed glazing, fitted with aluminium glazing beads attached to the outside.
The results are particularly slender sight lines of 95 mm in the side frame and true to its name, a greater passage of light.