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Prime-Line P 7843 5/16 In. x 100 foot Black, Flat Screen Spline (1 Roll)

4.4 4.4 out of 5 stars 657 ratings
$15.27 with 24 percent savings
List Price: $20.19

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Purchase options and add-ons

  • Used for installing fiberglass screen mesh into aluminum screen frames
  • Extruded UV stabilized black vinyl
  • 5/16 inch (0.315) wide x 0.092 tall
  • 100 foot roll
  • Flat bottom and curved top edge
  • Use with Prime-Line part P 8228 flat spline rolling tool
  • Please refer to the line art drawing for dimensions and compare with your needs before ordering
› See more product details

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4.2 4.2
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Prime-Line P 7843 5/16 In. x 100 foot Black, Flat Screen Spline (1 Roll)
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Product Description

Product Description

This flat screen spline is constructed of vinyl and comes black in color. The spline measures 5/16 inch (0.315 inch) wide x 0.092 inch tall x 100 ft. long and it is used for installing fiberglass screen mesh into aluminum screen frames. This type of screen spline is installed by laying it flat into the spline channel (over the fiberglass screen mesh) and inserting the inner edge of the screen spline under the lip of the screen frame. The spline can then be rolled in along the outer edge of the screen spline.

From the Manufacturer

This screen retainer spline is constructed from vinyl. It features a round hollow serrated core. This type of spline is used to hold screen material to window and screen door frames.

From the brand

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  12. primeline logo about us

    Headquartered in Redlands, California, Prime-Line has been recognized as North American's largest supplier of window and door replacement hardware for more than 40 years. We also offer hard-to-find fasteners, tools and other innovative products, designed to make your house a home.

    Prime-Line is your one-stop-shop, offering thousands of replacement hardware parts... including the one you need.

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Installation Manual (PDF)

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Prime-Line P 7843 5/16 In. x 100 foot Black, Flat Screen Spline (1 Roll)

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Price-24% $15.27
List: $20.19		$16.49$9.99$27.99$11.99-8% $21.99
Typical: $23.99
Delivery
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Get it as soon as Monday, May 13
Customer Ratings
4.44.4 out of 5 stars657
4.54.5 out of 5 stars135
4.54.5 out of 5 stars376
4.84.8 out of 5 stars55
4.94.9 out of 5 stars94
4.94.9 out of 5 stars21
Easy to install
4.0
4.8
4.7
5.0
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—
Value for money
4.2
4.7
4.6
—
—
—
Durability
—
5.0
4.4
5.0
—
—
Easy to use
—
4.8
4.7
4.4
—
—
Sold By
Amazon.com
Fine Product
FLYZZZ Window Screens
Mennyaoue
NeatiEase
Kasiejm

Customer reviews

4.4 out of 5 stars
4.4 out of 5
657 global ratings

Customers say

Customers like the performance, quality and spline of the hardware. They mention that it works great, is of good quality and that it's a perfect replacement for existing screened porch. Opinions are mixed on ease of installation and fit.

AI-generated from the text of customer reviews

26 customers mention23 positive3 negative

Customers like the performance of the spline. They mention it works well for their sun porch, patio doors, and to replace their screens. Some say it's a bit of a trick to put in but it works fine with screen or Florida glass.

"...Came when they said and comes on a nice reel and works great. A little tip put the reel in the sun before installing to soften the spleen...." Read more

"...years ago... and yet I got two doors done in less than 45 minutes, it's nice and tight, looks perfect... and I couldn't have done it without this..." Read more

"...The prime line was good product, and went in well...." Read more

"it is perfect for screen cage spline replacement - works fine with screen or Florida glass. It is a bit of trick to put in...." Read more

9 customers mention9 positive0 negative

Customers are satisfied with the quality of the hardware. They mention that the feeling of quality was apparent, the rubber is strong, and easy to work with. Some say that the frame is still good, but the top windows started popping out. Overall, most are happy with the product's quality and durability.

"...The frame is still good, but the top windows started popping out and I couldn't get them to stay in any longer, so I removed all the top and front..." Read more

"...This one seems to be more rubberized and is slightly easier to work with than the other product which was stiffer and seemed more like a vinyl..." Read more

"This appears to be a good quality product but there are mistakes in the description of the width." Read more

"...Good strong rubber. Not too stiff, easy to work with. I’m going to order another 1000’ as it’s priced much better than any of my other suppliers." Read more

5 customers mention5 positive0 negative

Customers like the spline. They say it's a perfect replacement for a screened in patio, screen cage splice replacement, and an existing screened porch.

"it is perfect for screen cage spline replacement - works fine with screen or Florida glass. It is a bit of trick to put in...." Read more

"Good spline. Nice and flexible making installation much easier than the stiffer spline from Lowe’s at a better price." Read more

"Great spline..." Read more

"Perfect replacement for existing screened porch..." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the appearance of the hardware. They mention that it looks good, and comes on a nice reel.

"...Came when they said and comes on a nice reel and works great. A little tip put the reel in the sun before installing to soften the spleen...." Read more

"...I got two doors done in less than 45 minutes, it's nice and tight, looks perfect... and I couldn't have done it without this spline...." Read more

"Easy to install, lies flat and looks good. Also seems to work well for keeping the screen tight." Read more

15 customers mention10 positive5 negative

Customers are mixed about the ease of installation. Some mention it's easy to install and locks solid in, while others say it'd be exhausting to work with.

"...Very glad I did. It installed perfectly using a spline tool...." Read more

"...This one seems to be more rubberized and is slightly easier to work with than the other product which was stiffer and seemed more like a vinyl..." Read more

"It worked on my Florida Lanai. It wasn't easy to install but it did the job." Read more

"...It so easy to install ( after you figure out how to) and locks solid in place. No more wind blown screens for sure!!..." Read more

8 customers mention4 positive4 negative

Customers are mixed about the fit of the hardware. Some mention that it has a more secure fit than the round spline, and works well for keeping the screen tight. Others say that it didn't fit, was way too big for any screen door or window screen, and didn''t work in their pool enclosure screen tracks.

"...and yet I got two doors done in less than 45 minutes, it's nice and tight, looks perfect... and I couldn't have done it without this spline...." Read more

"...appears to be a good quality product but there are mistakes in the description of the width." Read more

"...Also seems to work well for keeping the screen tight." Read more

"Too big for the channels on my porch. Could not find any smaller and so had to re-use the old spline" Read more

Great Lanai Screen Spline
5 Stars
Great Lanai Screen Spline
After buying the wrong spline I found this one to be the one I needed. It fits the typical Florida lanai screen.
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Top reviews from the United States

Karen
5.0 out of 5 stars I bought it to create screen windows in an old leanto greenhouse/sunroom. Worked great.
Reviewed in the United States on June 23, 2017
Verified Purchase
I bought this for kind of an odd purpose, but it turned out great. We have an older leanto greenhouse/sunroom we purchased many years ago. The frame is still good, but the top windows started popping out and I couldn't get them to stay in any longer, so I removed all the top and front windows. I covered the top with poly roofing sheets and added screen to the front windows.. There are grooves where the original windows fit, so I bought this hoping it could fit this in those grooves, keeping screen in place.. It works! I did the screens about 6 weeks ago, and all five windows are holding up very well. It appears to be good quality. I didn't have any problems inserting it. I used a window screen tool to roll it into the grooves. It cut easily with a pair of scissors.. I have gobs of it left, so I have plenty if I find another project to use it in.
5 people found this helpful
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sidd finch
5.0 out of 5 stars Great spline
Reviewed in the United States on November 6, 2022
Verified Purchase
Thank god for Amazon. This spleen cannot be found here in SWFL after Hurricane Ian. Came when they said and comes on a nice reel and works great. A little tip put the reel in the sun before installing to soften the spleen. Will buy more to keep for the next time I need to fix my pool lani screens.
2 people found this helpful
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Suzy the Gardener
4.0 out of 5 stars A fine spline
Reviewed in the United States on December 16, 2022
Verified Purchase
Did the job
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I.R.Stamper
5.0 out of 5 stars Perfect!
Reviewed in the United States on May 10, 2019
Verified Purchase
I couldn't find flat spline in any of our local hardware stores (Ace, Lowe's) so decided to try online. Very glad I did. It installed perfectly using a spline tool. I'm no screening pro, I've only replaced screen in one door many years ago... and yet I got two doors done in less than 45 minutes, it's nice and tight, looks perfect... and I couldn't have done it without this spline. Good product, now I know where to get flat spline at a great price!
3 people found this helpful
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James B. Cook
5.0 out of 5 stars Better than big box product. Easier to install.
Reviewed in the United States on May 18, 2020
Verified Purchase
After using the same type product from a big box store, I found this product slightly easier to work with. This one seems to be more rubberized and is slightly easier to work with than the other product which was stiffer and seemed more like a vinyl product. You can buy this product with confidence. The other product works, but is exhausting to work with. Four stars because I would like something a little more flexible. May be unrealistic, because this project was my first using this type of spline.
One person found this helpful
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ltjhn
3.0 out of 5 stars Product Description
Reviewed in the United States on July 8, 2022
Verified Purchase
This appears to be a good quality product but there are mistakes in the description of the width.
One person found this helpful
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The Grey
5.0 out of 5 stars Product was good and here in two days
Reviewed in the United States on April 18, 2016
Verified Purchase
Could not find this anywhere in Spartanburg / Greenville, SC. so I ordered with Prime. Product was good and here in two days. Home Depot was about half the price with 7-10 day shipping, but would have been more expensive with expedited shipping. Also the HD manufacturer had bad reviews with consistency. The prime line was good product, and went in well. If putting in with nylon screen, I would make sure you use a plastic tool, instead of the metal, so you don't slip off and cut screen. Found that one out the hard way.
7 people found this helpful
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The Bear
5.0 out of 5 stars GREAT PRODUCT!!
Reviewed in the United States on August 26, 2021
Verified Purchase
OMG!!! There's not a lot of products in this world that is as perfect as this is. It so easy to install ( after you figure out how to) and locks solid in place. No more wind blown screens for sure!! Anyway I took all of my old round spline and trash them, its this product from now on!!!
3 people found this helpful
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Top reviews from other countries

marbelle
2.0 out of 5 stars Very Difficult To Use
Reviewed in Canada on August 28, 2020
Verified Purchase
We ran out of spline and were in a pinch so though this would be worth a try. It's a much harder plastic and very difficult to use compared to the other brand we use. We won't use it again.
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