Second size diffusers I've ordered from… Second size diffusers I've ordered from them, second time they exceeded my expectations. Superior in every way to the diffusers they replaced. Thicker plastic and firmer fit.

They were the cheapest for my smoke… They were the cheapest for my smoke detectors . When out of stock , I received Email wanting to know if I wanted to wait or cancel . I waited , received call about 1 week later to inform me they got shipment earlier than expected . I still decide to wait , He said just text when ready for shipment . I texted when ready , and they were shipped that day . Couldn't ask for better Customer Service than this . David

super fast shipping super fast shipping! Excellent prices!! Very pleased! the smallest jet replacements had a small tab on them that was not an exact original replacement but i filed the tab off so they would work properly!

Quick response to orders and questions Quick response to orders and questions, excellent customer service, fast shipping. Just a great company all around in the days when pre or post purchase support and service is unheard of. David M. Visconte

The best price and great service They had the best price I could find on the internet for smoke detectors. There was a bit of a delay in shipping because they did not have everything in stock, but they called me right away to let me know and ask if I wanted them to send what they did have in stock and the rest when it came in.