Rolltrak Sliding Door Stop 75mm SKU: 210350 MODEL: R1720 Error. try again later You've successfully joined the club $ 8 .68 pack of 2 Mitre 10 SAvailable at selected stores. Check your local store for details Variants Plastic door stop for sliding doors. Features and benefits Plastic construction. Comes with two door stops. 13mm internal measurement. 20mm external measurement.