[ Overview ](/products/windows/conceptsystem-77/light) [ Technical information ](/products/windows/conceptsystem-77/light/technical-info) [ Downloads ](/products/windows/conceptsystem-77/light/downloads) Open tab menu *ConceptSystem 77*# Light ![ES 50](/sites/default/files/public/styles/product_header/public/inriver/images/132645_Reynaers-Aluminium-Render-046-Small.jpg?h=c9a3a702&itok=RpcRj7SW) ![Paralline High](/sites/default/files/public/styles/product_header_lifestyle/public/inriver/lifestyle_image/117118_DSC_8571.jpg?h=d73728dc&itok=F_NXb-8Y) ConceptSystem 77 is a trusted aluminium window solution that has been fully optimised to match all your project needs. The Light energy variant is an economic alternative that offers basic thermal performance at a competitive price. ###### Need help? Search and compare products [ Get started ](/products-search?f%5B0%5D=product_group%3A493&s=CS%2077%20Light "Get started") - ![Basic insultation levels at optimal value-for-money ratio](https://www.reynaers.com/sites/default/files/public/inriver/icons/116840_Economics.svg) Basic insultation levels at optimal value-for-money ratio - ![Versatile window solution to match any project needs](https://www.reynaers.com/sites/default/files/public/inriver/icons/116846_Design.svg) Versatile window solution to match any project needs - ![Reliable windows that last a lifetime](https://www.reynaers.com/sites/default/files/public/inriver/icons/116841_Performance.svg) Reliable windows that last a lifetime ## Technical details ### Thermal Insulation - Uf = 2.4 W/m²K - Uw = 1.5 W/m²K ### Air-Water-Wind - 4 / E900 / C5 ### Acoustics - Rw(C;Ctr) = 42(-2;-4) dB - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133535_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0006.png?itok=-RS6Lx2l) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133533_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0007.png?itok=Q2OV4lYt) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133538_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0008.png?itok=84DEPjtT) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/images/133534_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0009.png?itok=cf5bt8m1) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133543_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0010.png?itok=128Gp4mx) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133544_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0011.png?itok=lGsF3LXL) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133545_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0012.png?itok=NSsLVTYx) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133546_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0013.png?itok=lH2PWHjU) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133547_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0014.png?itok=hEpaQy1q) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133548_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0015.png?itok=XKaR-y1Q) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133549_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0016.png?itok=3fGNmEBx) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133550_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0017.png?itok=SaVdDv2P) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133551_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0018.png?itok=WrHQddc9) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133552_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0019.png?itok=3sV97Die) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133553_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0020.png?itok=MdGZA0N2) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133554_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0021.png?itok=vmLXyCng) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133555_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0022.png?itok=rvhwPY7u) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133556_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0023.png?itok=bCY3aMJk) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133557_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0024.png?itok=7qtZW_5k) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133558_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0025.png?itok=waPZ9F5t) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133559_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0026.png?itok=a6a1UcFr) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133560_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0027.png?itok=nQlcYOJW) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133561_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0028.png?itok=bgdRP1q0) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133562_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0029.png?itok=LUyPShve) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133563_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0030.png?itok=HTrKf0fv) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133564_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0031.png?itok=ARknc1qn) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133565_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0032.png?itok=x_1Ga4Qa) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133566_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0033.png?itok=4vQnxC9j) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133567_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0034.png?itok=yiYJwHh8) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133568_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0035.png?itok=fF3pK38s) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133569_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0036.png?itok=uOao4NNl) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133570_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0037.png?itok=iUob5Ukj) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133571_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0038.png?itok=Xsn7sIok) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133572_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0039.png?itok=9HDoG07b) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133573_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0040.png?itok=Ame_QSJT) - ![CS 77 Light](/sites/default/files/public/styles/360_degree/public/inriver/360_degrees/133574_INVP-320787_CS_77_-_WINDOW_LIGHT_INWARD_OPENING_corr2_Final_Render_0041.png?itok=IZ4TTbCv) ### System Dimensions - Min. Frame-Vent Width 84 mm ### System limitation - Max. Height Vent - 2800 mm - Max. Weight Vent - 170 kg 360° [ Full specifications ](https://www.reynaers.com/products/windows/conceptsystem-77/light/technical-info) ![A woman looking outside a Window](/sites/default/files/public/styles/cta_block_left/public/2023-02/woman-looking-outside-a-window.jpg?h=7c6d049b&itok=ySGAfWHl) Reynaers Aluminium handles, a tailored solution for every lifestyle. ## Handles To perfectly match your style, we offer a range of handle designs to complete your aluminium windows, doors, sliding and folding doors. [ Discover our Handles ](/products/search?f%5B0%5D=product_group%3A500 "Discover our Handles") ![Reynaers Aluminium Handles](/sites/default/files/public/styles/cta_block_right/public/2023-02/reynaers-aluminium-handles.jpg?h=3a93805d&itok=6XCX9pOw) Reynaers Aluminium handles, a tailored solution for every lifestyle. ![DigiTrace step 4](/sites/default/files/public/styles/cta_block_left/public/2023-12/Reynaers%20Aluminium-DigiTrace_35.jpg?h=b5e777bf&itok=gD2ORvzx) Effortless access to your element’s digital product passport ## DigiTrace A unique element identifier provides you with a wealth of information in a matter of seconds, eliminating the need for any manual search. A quick scan allows immediate access to all system and technical details specific to your element as well as to documentation, certificates and contact details of your fabricator. [ Discover more about DigiTrace ](/digitrace "Discover more about DigiTrace") ![DigiTrace](/sites/default/files/public/styles/cta_block_right/public/2023-12/Reynaers%20Aluminium-DigiTrace_38.jpg?h=b193cbc8&itok=brhyrck7) Effortless access to your element’s digital product passport