Guides
Guides
Hole positions and sizes are fixed when the tool is cut. The tables here are read straight from our spec sheets, so you can check them against your door.
Selection tools
- Hinge Size Converter: Inches to mmRead a hinge code such as 4x3x3.0 in millimetres, with the models that carry it.
- Lever Handle Finder by Door Thickness and Lock CaseEnter the door thickness and the lock case, get the levers that fit.
- Floor Spring SelectorEnter door weight and width, get the floor springs and closers that carry it.
- Concealed Hinge SelectorFilter concealed hinges by door weight, thickness and width.
- Pull Handle Finder by Centre DistanceReplacing a handle? Enter the hole centres and find the models that match.
Floor springs and closers
- Edge, Offset or Centre Pivot Floor Spring: How to Choose
- Floor Spring Hold-Open and Closing Speed: What Each Model Offers
- Floor Spring or Overhead Door Closer: Which One Fits Your Door?
- Floor Spring Size Chart: Door Weight and Width by Model
- Glass Door Floor Springs by Glass Thickness: 8mm, 10mm, 12mm and 14mm
- Floor Springs for Heavy Pivot Doors: 300kg to 600kg
- Hydraulic Hinge or Door Closer: Which Self-Closing Door Hardware?
- Hydraulic Hinge Types: Barrel, No-Mortise and Concealed
- Single Action or Double Action Door Closer: How to Choose
- Top Pivot or Glass Door Top Patch: Which One Goes With Your Floor Spring?
Pull handles
- Back-to-Back Pull Handle Fixing: M6 or M8, Timber or Glass
- Brass Pull Handles: Sizes, Weights and M8 Fixing
- D Pull or Bar Pull Handle: How to Tell Them Apart and Which to Choose
- Door Pull Handle Size Chart: Centres, Lengths and Grip Diameters
- Flush Pulls and Ring Pulls: Sizes for Sliding and Cabinet Doors
- G2750 Timber Grip Glass Door Handle: Sizes, Fixing and Where It Fits
- Glass Door Handle Hole Size: 12mm for M6, 16mm for M8
- Glass Door Handle Stem and Glass Thickness: What Has to Match
- Glass Door Handle or Timber Door Handle: What Changes Between G and T Models
- Long Entrance Door Pull Handles: Reading P=700+500+700mm
- PRE150 Recessed Pull for Pocket and Sliding Doors: Cutout, Depth and Door Thickness
- Pull Handle Finishes: Satin Stainless, Matt Black, Brass and Timber
- Replacing a Door Pull Handle: Measure the Old One, Match the Holes
- Round or Square Pull Handle: Same Holes, Different Bar
- Sliding Door Flush Pull Sizes: Cutouts, Recess Depth and Door Thickness
Hinges
- 3D Adjustable Concealed Hinges: How Much Each Model Adjusts
- RY8005 5-Inch Hydraulic Hinge: Sizes, Routing and Door Limits
- Ball Bearing Hinge Size Chart: Measured Sizes in mm, Not Just Codes
- Concealed Hinge Load Chart: 30kg to 200kg by Model
- How to Rout a Concealed Hinge: Cutter, Pocket and Door Thickness
- RY8001 Concealed Hydraulic Hinge: Hidden, Self-Closing and Adjustable
- Concealed Hinge or Ball Bearing Hinge: Which Should You Use?
- Door Hinge Materials: Stainless Steel, Brass, Zinc Alloy and Iron
- Flush Hinge Sizes: Butterfly and Offset Leaf Hinges in mm
- Hinge Sizes in Inches and mm: What 4x3x3.0 Really Measures
- Hinges for Heavy Doors: What Carries 100kg, 150kg and 200kg
- How Many Ball Bearings Does a Door Hinge Need? 2BB, 4BB and 6BB Compared
- Rounded or Square Corner Hinges: Which One Fits Your Door?
- Security Hinges With Studs: Single-Pin or Twin-Pin, and Which Size
- US Standard Hinges: Sizes, Screw Holes and How They Differ
- Zinc Alloy or Stainless Steel Concealed Hinge: How to Choose
Levers and locks
- Aluminium Lever Handles: Rose Sizes, Lock Cases and Anodised Finishes
- Door Knob Locks and Concealed Door Locks: Cases, Backsets and Sizes
- Lever Handle Door Thickness: Which Fits a 32mm to 58mm Door
- Lever Handle Finishes: Every Name in Our Range Explained
- Lever Handle Plate Sizes: From 185 × 45mm to 288 × 55mm
- Lever Handle Size Chart: Length, Rose and Projection
- Lock Case Numbers Explained: What 5845, 7255 and 8550 Mean
- Lever on Rose or Backplate: Which One Fits Your Door
- Mortise Lock or Tubular Lever Lock: Which One for Your Door
- Tubular Lever Lock Backset: 60-70mm, and How to Measure It
- UL1005 Stainless Lever Handle: Sizes, Weight and How to Order
- Zinc Alloy or Stainless Steel Lever Handle: How to Choose
Door accessories
- Bathroom Door Hardware: What a Toilet or Bathroom Door Needs
- Door Security Guards: Swing Bar or Chain, and How to Size Them
- Door Sign Plates: Push and Pull Sizes, Shapes and What to Specify
- Door Stopper Types: Post, Dome, Floor Plate and Concealed Compared
- Flush Bolt Sizes: Bolt Lengths, Dust-Proof Floor Sockets and Magnetic Catches
- Magnetic or Windproof Door Stop: How to Choose a Floor Stop
- Toilet Occupancy Indicators: Surface Bolts, Rose Sets and Thumb Turns
- Sliding Door Hook Lock Sizes: Plate Widths, Heights and Door Thickness
Bathroom and grab bars
- Matching Bathroom Accessory Sets: Rose Size, Tube Size and One Finish
- Bathroom Hardware Sizes: Towel Bars, Racks, Roll Holders and Recessed Units
- Fixed Grab Bar Tube Diameter: Ø25mm, Ø27mm or Ø32mm Compared
- Flip-Up Grab Bar Sizes: 700mm, 784mm and 800mm Compared
- How to Fix a Grab Bar to the Wall: Roses, Plates and Backing
- Recessed Bathroom Accessories: Wall Cutout and Wall Depth Before You Build
- Toilet Roll Holder and Robe Hook Sizes: Projection, Rose and Fixing Centres
- Urinal Grab Bar Sizes: 600mm and 627.2mm Rails, Ø27mm or Ø32mm Tube
Custom work and buying
- Buying Door Hardware from a China Factory: The Steps from Enquiry to Container
- How to Check a Door Hardware Sample Before You Approve It
- Copying a Door Hardware Sample: What a Factory Needs to Match It
- Door Hardware Finish Names: Chinese Factory Terms and Their English Names
- How to Write a Door Hardware Schedule for a Project
- From Drawing to Part: The Five Steps of a Custom Door Hardware Order
- How to Read a Door Hardware Drawing: P, Ø, W.L, Cutouts and Brackets
- OEM Door Hardware Under Your Brand: What to Send and What Comes Back
- What to Send for a Door Hardware Quote: A Checklist That Gets a Fast Answer
- Buying from Lock Factories in Xiaolan, Zhongshan: What a Buyer Should Check