NP300Catalogue section pages 19–28
Inward-opening casement hardware
The NP300 set locks an inward-opening side-hung sash from one side while the sash opens both ways from the handle. It suits fabricators who want multi-point locking without the fuller tilt and turn transmission.
Fits these windows
- Inward-opening side-hung casement sashes
- Sashes with a single-side multi-point lock that opens both ways from the handle
Profile groove
Set matched to the groove and rebate of your aluminium, thermal-break or PVC profile.
Send the profile section drawing with the groove width and depth, and we match the set to your groove before quoting.
Hardware in the set
Catalogue part numbers are kept exactly as printed, so an existing order can be matched item by item.
| Component | Catalogue part number | Qty |
|---|---|---|
| Lever handle | OHL.DB-8012 | Per sash |
| Main transmission rod | OHL.LJ-2007 | Per sash |
| Side transmission rod | OHL.LJ-2002 | Per sash |
| Wind bracing | OHL.XWQ-005 | Per sash |
Printed as “Hardware for open-in side hung window (NP300)” in the catalogue. The full selection table, including the locking points and quantities, comes with the quote.
Sizing and load
Load figures below are the ones printed in the AOHUALUN catalogue. A quotation confirms them against your sash, because the glass and the opening decide the real load.
- Hardware set
- NP300 — single-side multi-point lock, opening both ways
- Sash load
- Window hinges: up to 80 kg per sash
- Opening
- Inward opening, side hung
- Handle
- OHL.DB-8012 lever handle
Sash load is the figure the hinge range is rated to in the catalogue. Final confirmation uses your sash width, height and weight with the glass fitted.
Assembly drawing and cutting data
Every order carries the drawing for the profile it is made for, with the fixing points and cut lengths marked on it.

- The assembly drawing shows the chain from handle through main and side transmission rods to the locking points, so installers can check each position before fixing.
- Wind bracing is set to the opening you specify; it holds the sash instead of letting it swing.
- We confirm fixing points and rod lengths against your sash sizes in the drawing set.
Request the NP300 selection table
The printed table carries every item, quantity and optional part for this set. Send the sash sizes and we return it filled in for your window.

