The hose nozzle is slightly wider than the original Nutone nozzle so it fits a little tighter on the 1.5" vacuum cleaner connections. would get stuck, but it remains more durable than the old Nutone vacuum hose it replaces. I decided to replace the old vacuum cleaner fittings with new fittings that fit a little better. The hose is also larger in diameter so it will be sucked in. Essentially, the air encounters less resistance as it flows through the long tube.