Good practice in the design of sewer layouts requires compliance with inspection accessibility requirements; inspection traps must therefore be positioned in appropriate places.
Their surface should not differ significantly from the surrounding flooring. For this reason, the best solution is a fully removable floor section (including subfloor and tiles) that prevents the formation of gaps, which are inappropriate from a hygienic and sanitary standpoint.
Upon request, the frame can be supplied with an integrated siphon drain.