RT - 02 - B THRESHOLD AVAILABLE SIZES 36" Long 48" Long 72" Long 96" Long A heavy duty threshold ramp with a ribbed design which can be positioned back-to-back to form a two-way threshold ramp.Can be used in conjunction with Elaro’s Automatic door bottom seals to prevent rain, draughts, noise and smoke infiltration. Please enable JavaScript in your browser to complete this form. Finishes Available Available FinishesAluminium AnodisedSubmit Enquiry Now Experience a safer & more open world