Hi Hubert thank you for writing to us, the price for Thermal dimmers for motorhome only glass + motor cover -35 ° for a camper Hymer PL 704 is € 333.00 all-inclusive This is the supplied fastening system
https: //www.larcos. de / en / accessories / disk-adhesive-bianco.html # / vehicle_year_of_construction-1980
This is an accessory that you can choose with a cost of € 32.00 the most
https://www.larcos.it/en/accessories/kit-attacco-tipo-nautico-con-elastico-e-biadesivo-4- pezzi.html # / vehicle_year_of_construction-1980
I hope I have helped you
Best regards
Andrea