| Straight Knurled Lever on Rose | Office interiors, apartments, hotels and general commercial doors | Rose with concealed fixings | Grade 3–4 | 100,000–200,000 test cycles | Specify return-to-door geometry, spring assistance, spindle size, rose diameter and corrosion resistance. |
| Curved Knurled Lever | Residential projects, hospitality rooms and assisted-use interiors | Rose or backplate | Grade 2–4 | 50,000–200,000 test cycles | Check lever projection, clearance from adjacent walls and compatibility with the selected latch or lock case. |
| Offset Knurled Lever | High-traffic offices, schools, healthcare and public buildings | Heavy-duty rose or backplate | Grade 4 | 200,000 test cycles | Confirm load-bearing fixing, return spring performance, door thickness range and accessibility requirements. |
| Knurled Lever on Backplate | Traditional interiors, retrofit work and doors requiring cylinder concealment | Long or short backplate | Grade 3–4 | 100,000–200,000 test cycles | Match the profile to the lock, euro-profile cylinder, oval cylinder or keyhole configuration used in the target market. |
| Knurled Pull Handle | Entrance doors, glass doors, pivot doors and commercial reception areas | Through-bolted or surface-fixed | Product-specific; EN 1906 may not apply to every pull-handle assembly | Verify manufacturer test evidence | Specify pull length, projection, fixing centres, substrate, door thickness and required corrosion category. |
| Knurled Privacy Lever Set | Bedrooms, bathrooms, hotel rooms and residential privacy applications | Rose with privacy turn-and-release | Grade 2–3 | 50,000–100,000 test cycles | Include emergency release, indicator requirements, lock compatibility and local fire-door restrictions where applicable. |
| Heavy-Duty Knurled Lever | Transport facilities, hospitals, schools and continuously used public doors | Reinforced rose with through-fixings | Grade 4 | 200,000 test cycles | Require tested spring cassette, robust spindle retention, anti-loosening fixings and suitable surface durability. |