Guillotine frames enable almost boundless heights to be reached, whilst retaining the same quality and aesthetic criteria as other products. Perfectly balanced, the movable panes (maximum 500 kg per glass) can be manipulated with just a few grams of thrust, either manually or using a motor. They can operate in one of two ways: - a system with two identical glass panes which counter-balance one another; - a counterweight system on the side (integrated into the finishes) which opens up an infinite range of configurations.