Trial

Flush-wall counter-frame for three sliding doors

The counter-frame is designed to allow the sliding of three sliding glass doors, connected to each other through a special drag system, inside a single Aluzinc® structure. Without jambs or edge cover frames, it offers the possibility of designing large openings with a single counter-frame.


Trial is available for both plaster and plasterboard walls and contains, within a single concealed counter-frame, three sliding glass doors connected to each other by means of a drag system. In this way, large openings are obtained, while having small walls for housing the counter-frame. The result is a wall free of any finish, free of jambs or edge cover frames. The plaster and plasterboard are directly shaved on the aluminium profiles, completing the wall from an aesthetic point of view. Available in the single-door model, the thickness measures 140 mm for masonry walls and 158 mm for plasterboard walls. The plasterboard version is also designed to use sheets with a thickness of 12.5 mm per side. Due to the particular characteristics of this counter-frame, it is essential to pair it with the specific door or the dedicated hardware. The profiles that delimit the passageway are in raw unpainted aluminium. The structure is made of Aluzinc (aluminium, zinc and silicon) a corrosion-resistant material.

Accessories include a shock absorber for glass doors.

Technical diagrams and dimensions
Trial plaster

For plaster

Clear opening size Structural opening size Finished wall/internal space
L H Li Hi Pf/Si
1650 2100 2375 2180 140 / 102
1800 2575
1950 2775
2100 2975
2250 3175
2400 3375
2550 3575
2700 3775
2850 3975

For non-standard plaster

Clear opening size Structural opening size Finished wall/internal space
L H Li Hi Pf/Si
1650 *1800 ÷ 2400 2375 1880 ÷ 2480 140 / 102 - 158 / 102
1800 2575
1950 2775
2100 2975
2250 3175
2400 3375
2550 3575
2700 3775
2850 3975
Trial plasterboard

For plasterboard

Clear opening size Structural opening size Finished wall/internal space
L H Li Hi Pf/Si
1650 2100 2375 2180 158 / 102
1800 2575
1950 2775
2100 2975
2250 3175
2400 3375
2550 3575
2700 3775
2850 3975

Out of standard plasterboard

Clear opening size Structural opening size Finished wall/internal space
L H Li Hi Pf/Si
1650 *1800 ÷ 2400 2375 1880 ÷ 2480 158 / 102
1800 2575
1950 2775
2100 2975
2250 3175
2400 3375
2550 3575
2700 3775
2850 3975
Technical attachments
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