have french doors to patio that have a 3 1/2" clearance from bottom of door to floor. Is this one long enough?

You will be 1/2 inch short. From the bottom of the mount (not the two mounting holes as they are further up from the bottom of the mount by about 1/4 inch) to the bottom of the rubber tip is 3 inches when extended so the tip is flat with the floor. Even if you mounted the stop at the very bottom of the door you would be 1/2 inch short.

Does it come with screws for attaching it to the door? If so, are they wood screws?

it come with screws that match the finish of the door stop. They are wood screws but they will work on metal doors also.

I have one similar to this, and it became loose over time, to where it doesn't stay in the up position. Can this be repaired?

Cheap enough to replace not repair. Mine doesn't look like it can be repaired but it still works great,even after a year or so.

could this item be used as a security method, from an intruder kicking in the door?

My opinion (based on substantial security planning experience) is that it would slow down someone trying to force the door but would not stop a forced entry. The part of the doorstop in contact with the floor is only rubber or plastic and would not last long against forced entry. And of course you would have to install it on the inside of the door -opposite from a normal installation

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National Hardware Kickdown Door Stop, 4", Die Cast, Satin Chrome

National Hardware Kickdown Door Stop, 4", Die Cast, Satin Chrome

Product ID: 718787

Details

Brand
National
Color
Satin Chrome
Finish Type
Chrome
Global Trade Identification Number
Manufacturer
National
Material
Plastic

🔩Die cast zinc body with satin chrome finish

🦶Ribbed rubber foot for non-slip grip

🛠️4" heavy-duty kickdown design

E£ 1692

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Description

🚪 Keep your doors open and your walls flawless — the pro’s choice for seamless door control!

BUILT TO LAST - Premium die cast zinc with satin chrome finish resists corrosion and wear, ideal for high-traffic office or home environments.
FLOOR FRIENDLY GRIP - Ribbed rubber foot ensures a secure hold on any surface while protecting floors from scratches and scuffs.
WALL SAVING INNOVATION - Prevents costly wall damage by stopping doors before impact, maintaining your space’s polished look.
EFFORTLESS DOOR CONTROL - Spring-loaded kickdown mechanism locks doors open hands-free, perfect for busy professionals on the go.
SLEEK LOW MAINTENANCE - Modern satin chrome finish complements contemporary interiors and wipes clean with minimal effort.

The National Hardware Kickdown Door Stop is a 4-inch, heavy-duty door stopper crafted from die cast zinc with a satin chrome finish. Featuring a spring-loaded kickdown design and a ribbed rubber foot, it securely holds doors open on any floor surface while preventing wall damage. Durable and corrosion-resistant, it’s perfect for both residential and commercial high-traffic areas, combining sleek style with practical, hands-free operation.

Specifications

ASIN	B000CSN1EW
Best Sellers Rank	#41,347 in Office Products ( See Top 100 in Office Products ) #289 in Door Stops
Brand Name	National Hardware
Color	Satin Chrome
Customer Reviews	4.4 4.4 out of 5 stars (1,686)
Finish Types	Chrome
Global Trade Identification Number	00038613273535
Included Components	Kickdown Door Stop Sc 4
Item Dimensions L x W x Thickness	2.75"L x 6.63"W x 1"Th
Item Type Name	Kickdown Door Stop Sc 4
Item Weight	9.07 g
Manufacturer	National Hardware
Manufacturer Part Number	N273-532
Manufacturer Warranty Description	Warranty
Material Type	Plastic
Model Number	N273-532
Mount Type	Plate Mount
Number of Packs	1
Number of Pieces	2
Product Style	Updated Packaging
UPC	038613273535

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TrustScore 4.5 | 7,300+ reviews

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E£ 1692

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 months ago

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