Design consisting of an elaborate vase with three flowers arranged symmetrically along the central axis. The two outer flowers cross the middle one two thirds of the way up. Two blossoms with five pointed petals backed with blue glass are set below the crossing point. The middle flower ends in three buds. The vase motif is surrounded on all four sides by eight rectangular panels with floral ornamentation showing symmetrically arranged buds and leaves, placed along a central stem backed with yellow glass. Four square panels with a cross-shaped blossom and four diagonally placed leaves are set in the corners. Three additional panels at the bottom of the window show a row of lilies. The flowers and buds of the centre and framing panels are depicted in a strongly stylized way. It is therefore only possible to identify rose-like blossoms, springing beneath the five-petalled flowers of the two outer stems.
The left half of the design has been executed in watercolour, whereas the right half is largely blank; only the right side of the main panel is indicated by fine black lines. In the bottom left-hand corner of the main field, small circles have been drawn in pencil to represent the perforated background of stucco and glass windows.
In the second-lowest panel on the right-hand side, a section is drawn in pencil showing the bevelled cut of the front or inner lattice (towards the bottom) and the way the pieces of glass have to be fixed between the inner and outer grilles (see IG_484 and IG_486, Technique).