Product review (3 stars): Lasted 4 years before crumbling
Purchased in 2011. Works well, but the material that the vent is made from does not age well. I clean out the vent every 6 months or so. Last time I opened up the top lid, the hinges cracked. The plastic is very brittle now and I have to secure the lid with external means. This is a good idea but not executed well. I would hope for the lifespan to be more than 4 years. I need to replace this with a new one but not sure I would buy this product again.