I've been in the industry for about 5 years now, started in assembly and moved up to quality control. If you're looking for steady work, I found some great Window Manufacturer Jobs in Toronto at https://jobssite.ca/jobs/window-manufacturer/ when I was job hunting last year. The physical demands really depend on the position - fabrication and glass handling are more demanding, while finishing and inspection are less so. Most places offer good benefits and overtime opportunities. The skills are also transferable to other manufacturing sectors if you decide to switch later