Lever Handle Plate Sizes: From 185 × 45mm to 288 × 55mm

Updated 2026-11-05 · RAYEN 雷茵

When a buyer asks for a lever on a plate, the plate does two jobs. It holds the lever, and it decides what the door looks like around the lock. On a replacement it also has to cover whatever the old one left behind. Here is what we list in our lever handles, and how to choose.

What size are long lever backplates?

The table runs from the shortest plate up, and the sizes fall into a few families.

• 185 × 45mm: zinc alloy plates such as 58150-704 and aluminium plates such as AL5801-117. All on a 58mm centre.
• 200 × 48mm: the 304 stainless plates, such as SY5801-100. Also 58mm.
• 230mm long: 58172-783 at 230 × 48mm, 58200-2010 at 230 × 50mm and 58177-785 at 230 × 55mm. All 58mm. 5039-340 is also 230 × 50mm, but on a 50mm centre.
• 240mm and longer: 72150-704 at 240 × 48mm, 72133-712 at 285 × 62mm and 7284-578 at 288 × 55mm. All 72mm.

Note the pair at 230 × 50mm. Both plates share the footprint, but the keyhole sits in a different place. A plate size alone never tells you it will fit the lock. The drawing on each model page shows the centre, and our guide to lock case numbers explains how the case code ties to it.

What are the narrow plates?

The BK and ET lever families use a slimmer oval plate. BK4006B and ET4006A are 160 × 35mm, BK4008 is 160 × 32mm, ET4008 is 160 × 33mm, and ET4009A is 167.5 × 32mm. These plates carry no separate keyhole on the ET4006A photo, because the key sits in the lever neck. They suit a narrow stile where a long plate would look heavy.

What size are square lever roses?

• 48 × 48mm: KA9-2005, the smallest square base we list.
• 52 × 52mm: the common zinc alloy size, on A9-653 and A39-2010.
• 53 × 53mm: KA9-9941 in zinc alloy and SF-15 in stainless steel.
• 54 × 54mm: AL1-141 in aluminium.
• 55 × 55mm: AL1-114 and AL1-144, also aluminium.

KA5-A011 and KA5-A012 are door knobs on a 54 × 80mm plate, with an Ø52mm rose.

What size are round lever roses?

• Ø50mm: KA82-9902 and UL1005.
• Ø52mm: the common zinc alloy size, on A-666.
• Ø53mm: the stainless steel tube levers, such as S-01.
• Ø54mm: the aluminium levers, such as AL-10.
• Ø55mm: A5R-381 and A5R-750.
• Ø59mm: BK4018.
• Ø62mm: UL1007 and UL1016.
• Ø65mm: UL690, the largest round rose in this list.

A small step in diameter can matter on a replacement. An Ø50mm rose will not hide the marks left by an Ø62mm one.

Long plate or rose: which should you choose?

• Choose a long plate when you are replacing a plate, when the door has old marks to cover, or when you want the lever and keyhole to read as one piece. You take on a fixed centre.
• Choose a rose when you want a lighter look, or when the lock case may change. Rose levers often list two lock cases, so they give you room to choose.
• Choose a square rose when the door and the rest of the hardware are straight-lined. Choose round for everything else, or keep the base shape the same across a project.

What should you measure before ordering?

• Lock first. Measure the centre distance from the spindle hole to the keyhole.
• The old plate. Length, width and the position of the spindle hole on it. A plate that is the same size can place the spindle differently.
• The stile. Flat width of the door where the plate sits. 72133-712 is 62mm wide and needs more flat face than a 45mm plate.
• Fixing holes. Their positions are on the drawing; ask us if yours does not show them. If you reuse old holes, check them on a sample first.
• Lever clearance. 58172-783 has a 125mm lever and 7284-578 a 135mm lever. On a pair of doors or next to a wall, check the lever tip.

What to write on your order

Give model, plate size, centre distance, lock case, finish and door thickness. For example: 58150-704, 185 × 45mm, 58mm centre, lock case 5845, matt black, door 38-50mm. On a replacement, send a photo of the old plate with a ruler beside it, and we will compare it with our drawings before you order.