PTL makes the complete door and PTL lock OPEN system. This is not the deadbolt on the PTL doors. The Deadbolt on Newmar and Tiffin doors is similar for that style door. Is your Scottsdale a mid entry door or is the door up front by the Passenger seat. My recollection of the Scottsdales was they were Gas models and had mid entry doors. Usually that means you may be able to use a standard Deadbolt, UNLESS the bolt is ROUND. Is the throw bolt ROUND? Is the Deadbolt part of the large Black door lock handle. IF SO, then Trimark is the likely brand. Doug
http://www.trimarkcorp.com/en/zPlatform.aspx?platformid=22&categoryid=89