INVI Concept® is the innovator and manufacturer of the “Arriva” concealed door frame. Originally known in the UK market as the EZY-Jamb and EZY-Riser products, these products were acquired from EzConcept by Minarchi Pty Ltd. Minarchi subsequently relaunched the range under the INVI Concept® banner, and the “Arriva” concealed door frame is now known as the INVI Jamb® Classic Adjust (EZC). Door architraves are a permanent design feature in your home, and the appeal of flush doors lies in their simplicity and versatility. The seamless look of INVI Jamb means that the frame is made to compliment any interior, from the most minimalist to the most extravagant, and will match your space design over the years.
INVI Jamb® Classic Adjust (EZC) is a split-type door jamb manufactured from cold-rolled steel to produce a strong and secure assembly that conceals the door frame. Also distributed by Selo UK under the Arriva brand, this hidden door jamb is adjustable up to 10mm to allow for variation in the wall thickness. INVI Jamb wraps around the plasterboard and is plastered in with the rest of the wall, concealing all fixings to produce a continuous high-end finish.
Both the INVI Jamb® EZC and SRC are flush, architrave-free door jamb systems that wrap the plasterboard for a clean finish. The EZC is a two-piece adjustable split jamb suited to projects with varying wall thicknesses. The SRC is a one-piece jamb made custom to your wall thickness, rebated on one side to allow the door to sit flush with the hinge side of the wall.
What Do the EZC and SRC Have in Common?
- Wrap the plasterboard during framing to conceal fixings and incorporate the door into the wall face
- Can be painted immediately, readily accepting a level 5 finish
- Fire rated option available — speak with the INVI Concept technical team to confirm parameters
- Compatible with INVI Hardware® concealed hinges, designed and tested to withstand heavy traffic flow
Section summary: Both profiles deliver the same flush, architrave-free finish with fire rating and INVI Hardware® compatibility.
What Is the INVI Jamb® EZC?
Available in standard, full height, or custom heights and widths. Made from 20ga Galvanneal Steel.
Section summary: The EZC is a two-piece adjustable split jamb suited to projects where wall thickness may vary.
What Is the INVI Jamb® SRC?
Available in full height or custom heights and widths. Made from 18ga Zintec Steel.
Section summary: The SRC is a one-piece custom-made jamb, rebated on one side for a flush hinge-side finish.
EZC vs SRC: Quick Comparison
| INVI Jamb® EZC | INVI Jamb® SRC | |
| Construction | Two-piece, adjustable | One-piece, custom made |
| Wall thickness | Adjustable (9.5mm +/-) | Made to your wall thickness |
| Material | 20ga Galvanneal Steel | 18ga Zintec Steel |
| Push side of door | Classic rebate | Single rebate |
| Pull side of door | Flush with wall face | Flush with wall face |
| Fire rated option | Yes | Yes |
| Available heights | Standard, full height, or custom | Full height or custom |
| QuickShip available | Yes | Yes |
Which Profile Should You Choose?
- Choose the EZC if you need an adjustable two-piece jamb that accommodates varying wall thicknesses on site.
- Choose the SRC if you want a one-piece custom-made jamb with a single rebate for a premium flush finish on the hinge side of the wall.
Not sure which profile is right for your project? Contact the INVI Concept team on 020 3488 9655.