For a replacement order, choosing between TOPTEK TKAU6400EC and TKAU6400RR starts with the holes already in the door. EC uses an integrated rectangular plate; RR uses separate lever and cylinder surrounds. Their footprints differ, so a neat product photograph cannot establish which will cover and fix to the existing preparation.
Hardware distributors can narrow the choice with a dimensioned door-face survey, then order the selected furniture with the matching lock configuration. The TOPTEK Australian mortice-lock range provides both layouts for that discussion.
Compare the actual furniture footprints
| Selection point | TKAU6400EC | TKAU6400RR |
|---|---|---|
| Visible layout | Integrated escutcheon plate | Separate lever rose and cylinder surround |
| Published outline | 165 mm high × 45.30 mm wide plate | 53 mm diameter lever rose; 50.20 mm diameter cylinder surround |
| First replacement check | Overlay the plate and its fixing positions on the old preparation | Check coverage around each centre separately |
| Visible component material | Solid 316 stainless steel levers and trim | Solid 316 stainless steel levers and trim |
These dimensions describe the illustrated furniture; they are not drilling templates. Obtain the drawing for the configuration being quoted before machining. In particular, the 53 mm rose diameter is a cover dimension, not permission to cut a 53 mm spindle hole.
Check coverage and fixings as separate decisions
First record the outside edge of every existing hole and the outline left by the old furniture. Mark the lever and cylinder centres, fixing holes and any damaged surface. Include a scale in photographs, but use measured dimensions for the overlay.
The TKAU6400EC drawing shows 149 mm between the illustrated upper and lower fixing centres. A plate can hide a previous screw hole while its new fixing still lands in a weakened or unsuitable area. Coverage and a sound fixing position therefore both need an acceptable answer.
For TKAU6400RR round-rose furniture, inspect the lever and cylinder locations individually. Separate surrounds may leave old plate-end fixing holes visible between or beyond them. This is a practical reason to retain a plate layout on some refurbishments, even when round roses are preferred on new doors.
Where repair or additional drilling is proposed, agree the work with the door manufacturer or responsible project team. Fire and smoke-control doors also need the permitted hardware and preparation to remain within the applicable doorset requirements.
Order the matching assembly
Both layouts specify solid 316 stainless steel for their visible levers and trim. That statement applies to those parts, rather than every internal component. Choose the required finish and furniture arrangement together so replacements can be ordered consistently across the building.
Keep the lock function, backset, cylinder, spindle and door thickness attached to the furniture selection. Changing the appearance does not determine how the door grants access. For a refurbishment that retains an existing lockcase, provide its model and interface drawing rather than assuming a similar-looking trim will fit.
Make the first replacement useful for later orders
Fit one complete proposed assembly to a representative opening before ordering a large refurbishment batch. Check visible coverage, furniture seating, lever return and cylinder operation. Retain photographs of both faces and the accepted component references with the door drawing.
Separate doors with different hole patterns into their own groups. A successful sample on one door does not settle a second pattern elsewhere in the building. For distributors, keeping those groups and quantities on the quotation makes later replenishment clearer and helps prevent furniture being sent to the wrong opening type.
TOPTEK’s quality-management approach can be discussed against the dimensions, finish and operation agreed for the selected assembly. Those concrete requirements connect the accepted sample to the purchasing record.
Request an EC or RR replacement quotation
Send TOPTEK a dimensioned door-face survey, photographs of both sides, door thickness and the existing lock model. Add the intended EC or RR layout, operating function, finish and quantities by door group. Request the matching furniture drawing and an itemised sample quotation before releasing the replacement order.
Frequently Asked Questions
Will TKAU6400EC cover every old plate preparation?
No. Compare its 165 × 45.30 mm plate outline and illustrated fixing positions with the measured holes and surface marks on the door.
Is the TKAU6400RR lever rose diameter the drilling size?
No. The illustrated 53 mm diameter describes the lever rose. Use the configuration-specific preparation drawing for drilling and fixings.
Does changing from EC to RR change the lock function?
The furniture layout does not define the lock function. Specify the required operation and confirm that the selected lockcase, cylinder, spindle and furniture form a compatible assembly.