Two minutes, one tape measure · Published · Updated
How to measure for a security screen door
Three widths, three heights, use the smallest. Here is the whole method, what the numbers mean against flat pricing, and why they never need to be perfect.
The short answer: measure the width of the opening at the top, middle, and bottom, the height at the left, center, and right, and use the smallest of each. If the three widths agree within about a quarter inch, your opening is square and standard, and the flat published price - $2,475 installed for a hinged door - is your number. Your tape measure only ever prices the project; the professional measure before fabrication is the one the door is built from.
Nobody should need a guide to use a tape measure, so here is what this one is actually for: knowing what your numbers mean once you have them - standard or oversized, square or settled, flat price or custom quote - and knowing when to skip the exercise entirely.
The two-minute method
- Width, three times. Inside the door frame: top, middle, bottom. Openings are rarely the same width at the top and the bottom, which is normal.
- Height, three times. Threshold to frame head: left side, center, right side.
- Keep the smallest of each. A door fits the tightest point of its opening. The biggest number flatters the opening; the smallest one builds the door.
- Read the spread. Widths within about a quarter inch of each other, and heights the same: square opening, standard fit. More than that: the frame has settled, which is common in older stock and is handled at fabrication rather than being a problem. Our big-box vs custom guide explains why settled openings defeat stock doors.
- Note the hinge side and the swing. A hinged security screen door hangs on the outside of the existing frame and swings out, so while the tape is out, note which side your entry door hinges on and anything the screen would swing into: a railing, a planter, a porch light. Matching the entry door's hinge side usually makes daily use easiest, since both doors then open from the same side, and both details are settled at the measure.
What the numbers mean against flat pricing
A standard single entry runs to roughly 42 by 84 inches, and nearly every front door in Orange County sits inside it. Standard means the published flat price with nothing to negotiate: $2,475 installed for a hinged door, with sliders, French pairs, and windows on the pricing page. Genuinely oversized openings, arches, and multi-panel walls of glass are all buildable; they simply get a straight custom number in writing before any visit. The line between the two is the measure's job to find, not yours.
Standard openings at a glance
These are the reference sizes behind the flat prices, read from the same pricing file every price on this site comes from. Inside them, the published price is your number. Meaningfully beyond them, you get a straight custom number in writing before anyone visits.
| Opening | Standard size, roughly | Flat installed price | What to measure |
|---|---|---|---|
| Hinged single entry | 42 by 84 inches | $2,475 per door | The door frame opening, three widths and three heights |
| Patio slider, two panels | 72 by 82 inches | $2,675 per opening | The whole opening where the insect screen runs, height from the bottom track to the head |
| French pair | 72 by 84 inches across both leaves | $4,475 per pair | Both leaves as one opening, jamb to jamb |
| Window | Priced by glass area, not opening size | $825 up to 8 sq ft, then $100 per additional sq ft | Glass width times height in inches, divided by 144 |
Windows: the one measurement that moves the price
Door prices are flat, so door measurements just confirm standard sizing. Window screens price by glass area: $825 installed covers up to 8 square feet of glass, then $100 per additional square foot. Width times height in inches, divided by 144, and the calculator on the window screens page turns your rough numbers into the exact figure in seconds.
Remodeling? Sequence the screen last
The screen door is fabricated to the finished opening. New entry door first, stucco and siding repairs first, exterior paint first if the frame color will be matched to it, and the security screen measure the week the other trades wrap. Measuring before a remodel means building to an opening that is about to change, which is the one way to make a custom door fit badly. Where the screen falls in the order of trades, and what install day itself involves once the opening is final, is in our guide to what a security screen door installation actually involves.
Or skip all of this
The rough measure exists for one reason: pricing your project from the couch tonight, which is what published pricing is for. If you would rather not find the tape measure, book the in-home measure and start there. It is the authoritative measurement either way, it takes about 45 minutes, and it ends with a written itemized quote. Booking the measure is $25, and every dollar of it comes off your order when you buy.
Tape measure in hand
Measuring questions, answered plainly
How do I measure my door for a security screen door?
Three widths, three heights, use the smallest. Inside the frame, measure the width at the top, middle, and bottom, then the height at the left, center, and right. The smallest width and smallest height are your numbers, because a door fits the tightest point of the opening. That is the whole method, and rough is fine: the professional measure before fabrication is the authoritative one, so your tape measure only ever needs to get you a price, not a fit.
What if my measurements are a little off?
Nothing bad happens, and this is worth saying plainly because it stops people from starting: your rough numbers never reach the fabricator. They exist to price the project and to flag anything unusual early. Every door is built from the professional measure, which takes about 45 minutes and happens before anything is ordered. A quarter inch of tape-measure error changes nothing except your confidence.
What counts as oversized, and what happens to the price?
A standard single entry runs to roughly 42 by 84 inches, and nearly every Orange County front door sits inside that. Within standard, the flat published price applies: $2,475 installed for a hinged door. Meaningfully beyond it, or arched, or a multi-panel wall of glass, the door is real and buildable but gets its own straight number in writing before anyone visits, rather than a surprise at the house.
What size is a standard security screen door opening?
Roughly 42 by 84 inches for a hinged single entry, 72 by 82 inches for a two-panel patio slider, and 72 by 84 inches across both leaves of a French pair. Openings inside those sizes take our flat installed prices: $2,475 hinged, $2,675 sliding, and $4,475 for the French pair. Window screens are priced by glass area instead, $825 for up to 8 square feet of glass. Meaningfully larger, arched, or multi-panel openings are still buildable and get a straight number in writing before anyone visits.
How do I measure a sliding patio door for a security screen?
The same three-and-three method, taken where the insect screen runs today, because that is the track a sliding security screen uses. Measure the width across the whole opening at the top, middle, and bottom, and the height from the bottom track to the head of the frame at the left, center, and right, then keep the smallest of each. A standard two-panel opening of roughly 72 by 82 inches is $2,675 installed, flat. Three and four-panel walls of glass, corner stacking sets, and pocketing sliders are quoted individually, and the measure checks that the existing track and threshold are sound before anything is ordered.
How do I measure French doors for a pair of security screens?
Measure the pair as one opening, not as two doors: three widths across the full opening from jamb to jamb, three heights, and the smallest of each. A standard French opening of roughly 72 by 84 inches is $4,475 installed for both panels, the astragal seal where they meet, and matched hardware. If your French doors swing outward rather than in, say so when you book: it changes how the screens are configured, and it is settled at the measure rather than assumed from a photo.
How do I measure a window for a security screen quote?
Windows are the one product where your numbers change the price, because window screens are priced by glass size: $825 installed covers up to 8 square feet, then $100 per additional square foot. Measure the glass width and height in inches, multiply, divide by 144 for square feet, and the published formula does the rest. The window calculator does the arithmetic in front of you.
Should the security screen go in before or after my remodel?
After, and the reason is the measure. The screen door is fabricated to the finished opening, so it goes in after a new entry door is hung, after stucco or siding work, and after exterior paint if the frame color is being matched to it. Booking the measure for the week the other trades finish is the clean sequence; measuring before a remodel means fabricating to an opening that is about to change.
Do I need to measure anything before booking the in-home measure?
No. The rough measure exists for people who want a price on their own couch tonight, which is also why our prices are published at all. If you would rather skip the tape measure entirely, book the in-home measure and start from there: it is the authoritative measurement either way, and it ends with a written itemized quote. Booking the measure is $25, and every dollar of it is credited to your order when you buy.
Your numbers are close enough.
A rough measure prices the project; the professional measure builds the door - $25 to book, credited in full to your order. Written quote, published prices.
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