spare parts cant be bought but you can buy a new lockstrip, you need the name and model number of door locksrip so you can order one before you get your door open,or you will have a door that wont lock.you can buy a new lockstrip from northwest hardwares website or email me and I can give you a price for one,hope this helps
shaun www.sdwupvcrepair.co.uk, October 2008