do they work on a drop down door

They don't work with drop down door. Drop down hinges link: https://www.amazon.co.uk/dp/B06Y42RVJH?ref=myi_title_dp

Hi, would this be suitable for a box that is outside in the garden ?

The metal is certainly not rust proof neither is the internal mech. If your garden box has a good seal then it may possibly be okay but won’t last as long as an install indoors. Maybe a spray of WD40 to help stave off dampness.

Is there a max width of lid this can be used to closed. Mine will be around 700mm Is this enough or too small ?

I put two on an oak chest. The lid is 110 wide and 50cm deep. The lid is 18mm thick. These hinges work for a little while then the lid slams shut. In my experience they don’t take much weight. If your lid has any weight to it then I think you might struggle with these. They look good and are easy to fit and as they do provide a little support I’ve left mine on but it doesn’t soft close.

What screws do you need for this?

It’s basically limited by the thickness of the wood you are screwing into. It’s probably at least a number 6 screw with a length of 10 mm

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Douper 70N-120N Professional Soft Close Lid Support Hinge, Safety Hydraulic Lid Stay Automatic Slow Lowering Toy Box Damper Buffer for Storage Treasure Chest Cabinet Door, Pack of 2

Douper 70N-120N Professional Soft Close Lid Support Hinge, Safety Hydraulic Lid Stay Automatic Slow Lowering Toy Box Damper Buffer for Storage Treasure Chest Cabinet Door, Pack of 2

Product ID: 177399804

Details

Brand
douper
Colour
White
Finish type
Brushed
Manufacturer
Douper
Material
Metal
Mounting type
Door Mount

📦Supports up to 36 lbs (2 pcs)

⚙️Dual install: horizontal & vertical

🛠️Soft close precision ≤70°

Description

🔧 Elevate your storage game with silent strength and sleek safety!

RELIABLE LID HOLD - Securely holds lids weighing up to 36 lbs with dual hinges—no more propping or unexpected closures.
COMPACT DISCREET - Sleek, space-saving design fits tight spots without compromising on strength or style.
DIY FRIENDLY SETUP - Includes mounting template and manual for quick, hassle-free installation—right or left hand compatible.
EFFORTLESS SOFT CLOSE - Experience smooth, silent lid descent that protects fingers and prevents slamming every time.
VERSATILE INSTALLATION - Designed for both horizontal and vertical lid openings, perfect for toy boxes, cabinets, and chests.

The Douper 70N-120N Professional Soft Close Lid Support Hinge pack of 2 offers a brushed metal finish, compact design, and hydraulic slow-close technology that prevents slamming and finger injuries. Supporting lids up to 36 lbs, these versatile hinges install easily on horizontal or vertical openings, making them ideal for toy boxes, cabinets, and storage chests.

Specifications

ASIN	B07QV4XHDH
Best Sellers Rank	228,451 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,253 in Cabinet Hinges
Brand	douper
Colour	White
Customer Reviews	4.3 4.3 out of 5 stars (399)
Finish	Brushed
Included Components	2 x Lid Hinges, Fixing Accessories, Mounting Template and Install Manual
Item Dimensions L x W	20.3L x 10.2W centimetres
Item Type Name	hinge
Manufacturer	Douper
Material	Metal
Maximum Weight Capacity	36 Pounds
Model Number	143
Mounting Type	Door Mount
Unit Count	2.0 count

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