Wide compatibility: fits casement windows and roof skylights; available in multiple sizes to fit common gaps; suitable for homes, offices, and professional installations. Energy saving and comfort: airtight seal reduces heat loss and drafts, helping maintain a steady indoor temperature and lower heating and cooling costs. Durable performance: density foam provides stable sealing even with temperature changes; long service life around window installations. Safe and comfortable: solid materials improve year round comfort and protect the indoor environment without harmful effects. Easy to install: designed for simple placement and reliable fit. Use scenarios: Winter in a residential living room with a casement window, reducing drafts from outside air. Offices or apartments with roof skylights, improving comfort and lowering cooling costs in summer. Retrofit projects or installations in rental properties or commercial spaces needing a durable seal to degraded weatherstripping.