AP Products 018-317 Premium EK Seal for Slide-Out Rooms, White EK Base with 2-7/8" Wiper The ultimate Slide Out Seal System Can be used for new installations or when upgrading worn out rubber seals Order in Taiwano parts: the EK Base comes with wiper and is designed with straight edge for easy alignment w/adhesive backing. Fasteners may be used to install as well. D Seal, purchased separately, easily slides onto track in base, hides fasteners and provides a positive seal