I help my partner around the beach house by decreasing the air filters in the Heating and Air Conditioning system, however everything else that goes with condo repair and maintenance, he does… He always has the air filters in the cupboard in the gas furnace room; All I need to do is pull 1 out of the box and put it in the gas furnace, then last week, I pulled out an air filter, but it didn’t want to go in; I tried it front to back, back to front, and every side first, but it would not go in. He marked the box just appreciate every box, so I thought maybe there was some dirt in the air filter compartment. I got the vacuum and sucks out any dirt there, and I tried to install the air filter again, and when it didn’t fit, I tried to shove it in, and all I did was get it stuck. I called my partner and asked what I did wrong. He said I was genuinely using the wrong air filter… There was only 1 box there, and it was the same box I always unfastend air filters from. He was getting frustrated and said he had a meeting in various minutes. He didn’t have time to discuss air filters with me on the iphone. I hung up and called the Heating and Air Conditioning company. When the Heating and Air Conditioning worker arrived, he said I was trying to install the wrong air filter. I said I didn’t know it was the wrong air filter. He looked at the box, and said the right numbers were on the box, but the wrong air filter was in it. It was my partner’s fault, and not mine.