Seat liners are now available for both our plastic shells Student 3/4 and Student 5/6. The seat liners match perfectly the seat of the plastic shell. T-nuts can be positioned exactly to your specification. The seat liner for Student 3/4 is shown in our wood catalogue in the category “seats” under mould number 607. The seat liner for Student 5/6 is shown on the same page under mould number 605.