The Uni-Flexx offers a straightforward solution for installing lights or other built-in devices in the rafter insulation of exposed roof trusses. The electrician himself can drill the required 74 mm hole without any specific tools. The 68 mm installation opening is suitable for all common lights. Fixing slats and mounting tabs enable quick and clean installation. The XL 150 installation housing is then plugged in and the built-in device connected. This also allows you to benefit from all the advantages of the XL series. The insulation remains intact, so energy efficiency is still guaranteed. With the Primo Uni-Flexx, lights or other built-in devices that were forgotten in the planning can be retrofitted into a filigree ceiling at low cost. Thanks to the clever design, a 74 mm drill hole is sufficient. This can be made by any fitter with the Primo high-speed drill. The XL 150 installation housing is then plugged in and the built-in device connected. This also allows you to benefit from all the advantages of the XL series. With the Uni-Flexx you increase your flexibility in concrete construction and save yourself stress, time and money.