A 70mm backset tubular latch is a replacement option for an interior door when the handle’s spindle-to-door-edge measurement is 2-3/4 inches. The adjustable latch is the clearest choice for buyers who need either a 60mm or 70mm backset; the stainless-steel options may suit humid rooms, while the matte-black model is for a specified square spindle. Check the backset, door thickness, spindle shape, and faceplate before ordering.
| Product | Best For | Key Fit Detail |
|---|---|---|
| Adjustable tubular latch | Flexible backset replacement | 60mm or 70mm; 35–45mm door thickness |
| SEIWEI stainless-steel latch | Bathrooms and kitchens | Listed as 70mm; reversible design |
| Matte-black adjustable latch | Square-spindle handles | 60mm or 70mm; 8mm spindle |
| Tubular mortice latch | Lever and internal handles | Backset not specified |
| Tubular mortice passage latch | Basic interior passage use | Backset not specified |
Adjustable 60mm Or 70mm Tubular Latch
Best for: Buyers who need a choice between the common 60mm and 70mm backsets. The latch is described as adjustable and fits doors 35–45mm thick, making it a flexible replacement candidate for bedroom, bathroom, or office handles.
Its listed construction combines iron and zinc alloy with corrosion-resistant plating. The product description also highlights a spring mechanism and bolt design intended to support smoother, quieter closing. It is selected because the two stated backset settings directly match this search’s 70mm requirement while offering another setting if measurements differ.
Check before buying: Confirm door thickness and that the existing handle and latch arrangement match. The listing does not specify every faceplate or spindle dimension.
SEIWEI Stainless-Steel 70mm Latch
Best for: Buyers replacing a latch in a bathroom or kitchen who want stainless-steel construction. Its product name specifies 70mm, and the features describe resistance to rust and wear in humid environments.
The latch has a reversible design for left- or right-hand doors and a curved radius edge. The description says the radius edge can make installation easier than a rectangular door catch. These details make it a useful choice when orientation and moisture exposure matter.
Check before buying: The provided features do not state door-thickness limits or spindle dimensions. Compare those measurements with the existing hardware before ordering.
Matte-Black Adjustable Square-Spindle Latch
Best for: Buyers with an 8mm square-spindle handle who need a 60mm or 70mm backset. The listing specifies both backset choices, an 8mm square spindle opening, and a matte-black finish.
This option is positioned as a way to replace the latch rather than the entire handle set. It lists door thickness of 35–45mm and a door bore diameter of 50–55mm. Those measurements make it easier to compare against existing hardware before purchase.
Check before buying: The listing says the latch is not for a half-moon spindle. Measure the spindle and bore; avoid this model if your handle uses a different spindle shape or size.
Tubular Mortice Passage Door Latch
Best for: Buyers seeking a passage latch described for lever and internal door handles. Its listed material is iron with protective plating, and the description mentions a fire-retardant design intended to help keep doors closed during emergencies.
It is included as a potential interior-door replacement, but the supplied product information does not provide a 70mm backset measurement. Confirm the exact backset and other dimensions with the product details before treating it as a fit.
Check before buying: Do not assume it matches a 70mm door based on the generic tubular-latch name alone.
Tubular Mortice Passage Latch
Best for: Buyers comparing a basic tubular passage latch for lever or internal handles. The supplied description lists iron construction with protective plating and a fire-retardant design intended to help keep a door closed.
This is a second candidate in the same general category, but the available features do not identify its backset, door-thickness range, spindle size, or faceplate dimensions. It is selected for relevance to tubular passage-latch replacements, not because its 70mm fit is confirmed.
Check before buying: Verify the 70mm backset and installation dimensions in the product listing before purchase.
Buying Guide: How To Choose A 70mm Tubular Latch
How do you confirm a 70mm backset?
Measure from the edge of the door to the center of the handle spindle or latch hub. A 70mm backset is approximately 2-3/4 inches. Measure the existing latch before removing it when possible. Do not confuse the backset with the full length of the latch body.
Which other measurements matter?
- Door thickness: Compare the door with the latch’s stated range. The adjustable models above list 35–45mm.
- Spindle shape and size: Check whether the handle uses a square spindle and measure its width. The matte-black option specifies an 8mm square spindle.
- Door bore and faceplate: Compare the bore diameter, faceplate shape, screw positions, and latch dimensions with the replacement details.
- Door handing: If orientation matters, look for a reversible latch or confirm that the latch bolt can be reversed.
Should you choose adjustable or fixed backset?
Choose an adjustable latch when you want the option to set either 60mm or 70mm, provided its other dimensions match. A latch described as 70mm may be more direct for a measured 70mm opening, but verify its spindle and door-thickness requirements. Product listings without a stated backset need additional confirmation.
Does stainless steel matter indoors?
Stainless-steel construction may be useful in humid spaces because the SEIWEI listing describes resistance to rust and wear. For a dry bedroom or closet, prioritize dimensional fit and handle compatibility rather than choosing by material alone.
Frequently Asked Questions
Is a 70mm backset the same as 2-3/4 inches?
Yes. A 70mm backset is approximately 2-3/4 inches.
Can I use a 60mm latch in a 70mm door?
Not if the latch cannot adjust to 70mm. Choose a product that specifies a 70mm setting or confirms that measurement.
Will any tubular latch fit my door handle?
No. Backset, spindle shape and size, door thickness, bore, and faceplate dimensions can all affect fit.
Can I replace only the latch instead of the whole handle set?
Often, if the replacement latch matches the existing handle’s spindle and the door’s installation dimensions. Confirm the measurements before purchasing.
Are both passage-latch listings confirmed for 70mm?
No. Their supplied features do not state a backset. Check the product details for the exact measurement before ordering.