The screen door had two sounds, and you knew both of them without thinking.

The first was the opening -- a specific creak or groan depending on the age of the spring, the humidity that week, whether your father had oiled the hinges lately. The second was the slam. The spring pulled it shut and it hit the frame with a crack that carried through the whole house and out into the yard. Wood against wood, then the rattle of the glass or the screen settling. You could hear it from the kitchen. You could hear it from the back bedroom. On a quiet summer afternoon you could probably hear it from the neighbor's yard.

Your mother could hear it from anywhere in the house, and she always knew who it was.

What the sound actually did

The slam told you what time it was. Not by the clock -- by who was coming in.

The screen door's late-morning slam was your father coming in from mowing. The early-afternoon slam was one of the kids back from the pool. The five-thirty slam was whoever was hungrier. The repeated slamming at dusk -- three times in ten minutes -- was the neighborhood rearranging itself as everyone got called home for dinner.

A mother in 1965 could track the entire social life of her household through the screen door. She didn't have to get up from the couch. She knew the pace of your step, could hear whether you were hurrying or dragging, registered the silence between the door opening and the door closing and drew conclusions from it. Was it one person or two? Were you letting someone in or just coming in yourself? A visitor coming to the front door knocked first. Everyone else came straight through. Everyone else was family or close enough.

The sound was not charming. It was information.

The door itself

Most screen doors were wooden, at least until the aluminum versions became common in the late 1960s and early 1970s. The wooden ones had a particular weight to them. The spring was mounted at the top corner, and over years of use it either got stronger or weaker than it was supposed to be. Stronger, and the door slammed hard. Weaker, and it didn't quite close, which irritated everyone and let in the mosquitoes, which irritated everyone more.

The wooden frame expanded and contracted through the seasons. In a humid summer the door might stick against the frame and require a shoulder. In winter, if anyone bothered with the screen panel at all (many households swapped in a glass storm panel from October to April), the frame had shrunk back and the door sat loose.

The screen itself was a fine mesh that filtered the light just slightly. Looking out through an old screen at a bright yard gave you a particular view -- slightly softened, slightly fragmented -- that you can still find in certain old houses where the screen hasn't been replaced for forty years. The mesh caught dead moths and cottonwood fluff and the occasional wasp in the corner. It was cleaned occasionally, never obsessively.

The aluminum door that replaced the wooden one was lighter and didn't swell with humidity and required almost no maintenance. It also didn't sound the same. The aluminum slam is thinner, metallic, a different register entirely. You hear it and you know what it is, but it doesn't carry.

The instruction about the door

Every American child of a certain era received the same instruction, delivered countless times, in countless kitchens:

Don't let it slam.

This was not a suggestion. It was part of the social contract of the household, like taking your shoes off on the carpet or not calling after nine o'clock. The instruction was largely ignored. The door slammed anyway, because closing a screen door gently requires a consciousness about it that ten-year-olds and teenagers and anyone in a hurry simply don't have. You pulled it closed, and the spring did the rest.

Adults slammed it too, but adults were not corrected. This was noticed.

What it said about the house

A house with a screen door was a house that was, at least seasonally, open to its neighborhood. You could not have a screen door without the world's sounds coming through it. The lawn mower from three houses down. The ice cream truck two blocks over. The kids yelling down the street. Your next-door neighbor calling her own kids in from the yard.

The screen door filtered the air but it did not stop sound. You sat in the living room in July and heard the summer outside, muffled but present. The house breathed with its surroundings in a way that a fully air-conditioned and closed house does not.

This was sometimes a pleasure and sometimes a nuisance, and the line between the two shifted depending on the day and the noise and how tired you were. On a good summer evening the sounds that came through the screen door were the sounds of a neighborhood that was alive. On a bad afternoon they were an interruption you couldn't shut out because the cost of shutting them out was losing the cross-ventilation from the side window.

The tradeoff was always present. You lived with it.

The honest part

What you were mostly doing, with the screen door, was managing your relationship with summer heat. The door existed because the house had no central air conditioning. The summer was hot, and you opened every window and propped every door and hoped for a breeze, and the screen door let the air move through while keeping some fraction of the bugs out.

Central air conditioning improved American life significantly and in ways that should not be sentimentalized around. People died of heat stroke more often. Elderly people in particular suffered through summer weeks that would be easily survivable today. The windows-open summer of 1958 was not an idyll; it was a management strategy for a genuine physical problem. If you asked the woman in the kitchen in August 1958 whether she would prefer a window unit or the breeze through the screen door, she would have taken the window unit. Almost everyone did, as soon as they could afford one.

The screen door disappeared from the center of the American house because the air conditioner solved the problem the screen door was managing. This is a fine outcome. The nostalgia for the screen door is real and not dishonest, but it should not pretend that what was lost was a preference rather than a workaround.

What went with it

The sounds went with it. That's the real accounting.

When the house closed itself against the heat in the 1970s and 1980s, the neighborhood outside the house became less audible. You no longer heard the ice cream truck in time to do anything about it. You no longer knew when the kids next door came home. The screen door's two-sound announcement system -- the creak, the slam -- got replaced by nothing, or by the comparatively muffled sound of a solid door closing against its weatherstripping.

The family inside the closed house became slightly less connected to the street outside it. This happened gradually, through the spread of air conditioning and the move to suburbs designed around the car rather than the sidewalk. The screen door is one small piece of a larger story about American houses turning inward.

A screen door on a back porch is still fairly common. Some houses have them in front. The sound is still there, in the right house, in the right season, if the family has decided not to run the air conditioning on a mild evening and has left the house open to whatever's happening outside.

You can still hear it, if you're in the right place. The creak, the slam, the spring settling. Someone just came in. Someone you know, probably, moving fast, not thinking about the door at all.

Did your house have a screen door? Do you remember your mother's instruction about it? Drop yours in the comments -- we'd love to hear it.