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These vent openers seem good value for the price , are easy to fit and are all working well, got something similar last year but one of them leaked the wax out while in storage so i will see what happens for next year ,but whatever happens i would recommend these at the price they are.
Verified purchase: Yes | Condition: New
Easy to install this unit although it is marginally longer than the previous unit so that the top light is very slightly open when in the closed position. Very sensitive to temperature changes so is always open when expected. The only downside is the comparative length of time for delivery from China although it was well within the stated time
Verified purchase: Yes | Condition: New
it was a good price and quality, The only real comment was it took two days in place to settle down and work correcrly
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
Cylinder works good but it could have a higher temperature range - the piston is extended to 40-50% stroke at 15 ° C.
Verified purchase: Yes | Condition: New