VEKA Softline 76 MD PVC Window System

VEKA Softline 76 MD PVC Window System

The VEKA Softline 76 MD PVC Window System is a multi-chamber PVC-U profile platform built around a 76 mm system depth and a central third seal. The MD seal sits between the frame and sash, adding a third sealing level to the profile’s contact layout and giving this version its distinct construction identity. The frame, sash, seals and glazing form a coordinated assembly around the opening. The profile accepts glass units up to 48 mm thick, leaving room for the fabricator to select a compatible glazing build for the planned balance of daylight, privacy and sound control. VEKA also describes the range for triple glazing and special functional glass, including sound-insulating glass. These are glass possibilities within the system rather than a description of the glazing in a particular finished window. The profile wall is classified as Class A under DIN EN 12608-1, and VEKA lists the profile’s Uf as 1.1 W/(m²K). Uf describes heat transfer through the profile section; it is separate from a whole-window Uw rating, which also reflects glass and overall construction. In appearance, the narrow profile sightlines help frame the glazed area: VEKA lists minimum view widths of 71 mm for a fixed field and 112 mm for a frame-and-sash arrangement. Those system dimensions make Softline 76 MD a defined choice for projects seeking a PVC window profile with a center seal, substantial glazing capacity and clearly specified frame proportions.

Center-seal construction and profile proportions

The center-seal layout is the defining feature of Softline 76 MD. Its third seal runs at the frame-and-sash interface, supplementing the outer sealing levels and shaping how the opening elements meet. Around that joint, the multi-chamber PVC-U section accommodates the glazing and hardware zones within the 76 mm profile depth. The 48 mm maximum glazing capacity describes the supported system limit, so glass selection can be coordinated with the sash design instead of being inferred from the profile name alone. VEKA lists a maximum sash width of 1400 mm and height of 2500 mm, plus the minimum visible widths for fixed and opening combinations; these measurements describe the profile system and its limits. The Class A profile wall classification and stated Uf value refer to the profile itself. Manufacturer system figures and reference values depend on the selected glass, dimensions, reinforcement, hardware and fabrication. Softline 76 MD’s design can be considered from both sides of the window: the frame-and-sash view widths define the visible PVC borders around the glass, while the available glazing depth supports a range of compatible glass builds. For a contemporary façade, those proportions can keep the glazed opening visually prominent without losing the clear frame outline. The central gasket also gives the system a distinctive technical layout for projects where a three-level seal is specifically desired.

VEKA Softline 76 MD system specifications