This seal has a very slim holder, making it suitable for rebating into stops, meeting stiles etc. The five inserts have many applications, including compression action seals on door & window stops & sliding action on sash window & sliding doors. The tubular inserts make excellent buffer stop seals on sliding action frames. The width of gap which can be covered by these inserts varies from 2mm. Sealmaster RCW Stop Seal Length 2100mm Satin Anodised Aluminium