Instruct: Classify the given Amazon review as either positive or negative.
Query: M-D Building Products 7039 Seal-O-Matic Door Sweep, 36 Inches, Aluminum

I concur with the other neg. reviews. The product as delivered contains 3 spring-loaded cantilever arms that are supposed to force the lower weatherstripped bar downward against the threshold. That might work as designed on a full 36" door. Mine was 32", and when trimmed to length, the third arm was deleted. Thus, a length of the movable weatherstripped arm is left without any direct action to push it downward against the threshold. In addition, the actuating end with the nylon button didn't always move downward. This prevents the door from closing. BTW, it's also flimsy. The idea here is a product that should work automatically without issues. Skip this one and save your money. Right idea, wrong execution.