The 60mm Sliding Window & Door Series is a compact, cost-effective solution tailored for projects where space efficiency and basic thermal and acoustic performance are key considerations. Its multi-chamber profile helps reduce heat loss and improve energy performance, while the sliding system ensures smooth, reliable operation. Water tightness is addressed with effective sealing and weep hole design, and sound insulation is supported by tight seals and welded joints. Steel reinforcement provides adequate security for residential and light commercial applications. The UPVC material is built to withstand weather exposure without rotting, corroding, or warping, and is resistant to acids, alkalis, and termites. Fire-retardant properties offer added safety, while the smooth, sealed surface keeps maintenance simple and painting unnecessary. High electrical insulation and pollution resistance further enhance its suitability for a range of settings. Environmentally, the 60mm series is lead-free, energy-efficient to manufacture, and fully recyclable, making it an accessible and responsible entry-level option in the LESSO window and door range.