25 mm deep x 25 mm wide (no deflection)., 25 mm deep x 36 mm wide (no deflection)., 25 mm deep x 40 mm wide (no deflection)., 50 mm deep x 25 mm wide (no deflection)., 50 mm deep x 36 mm wide (no deflection)., 50 mm deep x 40 mm wide (no deflection)., 90 mm deep (±25 mm deflection – internal)., 90 mm deep (±25 mm deflection – internal)., 94 mm deep (±25 mm deflection – external)., 125mm deep (±25 mm deflection – drywall)., 135 mm deep (±40 mm deflection – internal)., 135 mm deep (±40 mm deflection – internal)., 140 mm deep (±40 mm deflection – external)., 140 mm deep (±40mm deflection – drywall).