Fitting arrangement, in particular for flush mounting, comprising a first installation housing, which has an interior space which is accessible via an insertion opening of the installation housing, a fitting block, which is to be mounted in the interior space of the first installation housing and which has at least one supply hose which is to be connected to a fresh-water connection, at least one installation tube, which leads away from the first installation housing from a passage opening in the first installation housing, a second installation housing, which has at least one passage opening via which the installation tube opens into an interior space of the second installation housing, wherein provision is made in the second installation housing of at least one fresh-water connection to which said supply hose can be connected, characterized in that the fitting arrangement comprises a mounting element, which, for the mounting of the fitting block, can be inserted into the interior space of the first installation housing and which has at least one guide channel with a front opening and with a rear opening, wherein, with the mounting element inserted, the front opening is freely accessible, and, with the mounting element inserted, the rear opening is substantially congruent with respect to the passage opening, such that the supply hose can be pushed into the guide channel via the front opening and can be guided from the guide channel into the installation tube via the rear opening and the passage opening, and wherein, after the supply hose has been pushed into the installation tube, the mounting element can be removed from the interior space of the first installation housing such that the interior space of the installation housing is freed, so that the fitting block can be inserted into the interior space of the first installation housing. a first installation housing, which has an interior space which is accessible via an insertion opening of the installation housing, a fitting block, which is to be mounted in the interior space of the first installation housing and which has at least one supply hose which is to be connected to a fresh-water connection, at least one installation tube, which leads away from the first installation housing from a passage opening in the first installation housing, a second installation housing, which has at least one passage opening via which the installation tube opens into an interior space of the second installation housing, wherein provision is made in the second installation housing of at least one fresh-water connection to which said supply hose can be connected, wherein, with the mounting element inserted, the front opening is freely accessible, and, with the mounting element inserted, the rear opening is substantially congruent with respect to the passage opening, such that the supply hose can be pushed into the guide channel via the front opening and can be guided from the guide channel into the installation tube via the rear opening and the passage opening, and wherein, after the supply hose has been pushed into the installation tube, the mounting element can be removed from the interior space of the first installation housing such that the interior space of the installation housing is freed, so that the fitting block can be inserted into the interior space of the first installation housing.