Brand New And Genuine, This Glowworm 801635 Heat Exchanger Door Seal Fits A Wide Range Of Glowworm Boilers In The Uk And Around The World. Some Examples Are As Follows: Glowworm Hxi, Sxi, Cxi, Ultracom And More. This Product Also Fits A Wide Range Of Different Vaillant Boilers And Could Save You Money By Using This Option!!! Some Examples Are As Follows: Vaillant Ecomax, Ecotec And More. You Can Also Find This Product In Our Universal Fitting Parts Section On The Products Page.