Invisible screw assembly with quick frame back-filling

For corner, block and add-on frames
It is now even easier to install frames invisibly, quickly and, above all, cleanly. The simple screw assembly method developed by Novoferm ensures that frame facing remains perfectly smooth; and it is fast to boot.



And if you also use the pre-fabricated moulded mineral wool section, you can eliminate the need to pour mortar. Genuine competitive advantages that really pay off!

Simple screw assembly and clean frame back-filling.

Invisible screw assembly

Quick installation of the frame
Top quality appearance without weld seams
Simple door installation
Clean frame edges thanks to easy-to-mount cover strip

Frames for fire-resistant and multi-purpose doors from Novoferm

From now on: bolt on invisibly!
From now on: back fill in a flash!

Vastly improved cost efficiency when installing steel doors with corner, block and add-on frames.

Use the time you save as a competitive advantage!

Rapid back-filling of the frames

With the new, approved moulded mineral wool sections from Novoferm
No longer any need for mortar or grouting costs
Frames are available with complete installation kits on request, e.g.

with mounting parts for screw assembly and/or
with approved Novoferm moulded mineral wool sections

For corner, block and add-on frames

The results speak for themselves:
Finished frame after application of the cover strip – a top class appearance, quickly installed..

Make use of the invisible screw assembly method for corner and add-on frames as well. Simply assemble the two parts as described above, bolt them – finished.

Advantages of invisible screw assembly

Quick installation of corner, block and add-on frames in fair-faced concrete/masonry
Quick and easy to install: just fasten the screws
Top quality appearance of the frame and door is sustained
Available in combination with back-filling with mortar compound or approved mineral wool moulded sections from Novoferm
Possible for door sizes up to CS 1250 x 2500 mm (1-leaf) or 2500 x 2500 mm (2-leaf)

Invisible screw assembly – nothing could be easier!
Novoferm screw-mounting frames are supplied together with the approved installation kit. The installation parts are already pre-assembled in the case of block frames.

Corner frame

Block frame

Corner frame with add-on frame

Invisible screw assembly	T30 doors*	T90-doors*	Multi- purpose doors*
Corner, block, add-on frame	T30-1 N2/50 T30-2 N22/50 T30-2 N22	T90-1 N9 T90-1 N19 T90-1 N29	MZ 53-1 MZ 53-2

* not available for doors with burglar resistance or top panel/transom window

Advantages of back-filling with moulded mineral wool sections

Particularly easy and fast means of back-filling frames with perfectly fitting, approved moulded mineral wool sections from Novoferm
Marked reduction in thermal bridges compared with conventional mortar filling
Approved for all T30 frames, see below (corner, block and add-on / overlapping counterframes, single or double leaf, except T30-2 type N22)
Easy-to-mount cover strip creates a neat frame edge
(on corner frame / corner frame with add-on frame for installation
in masonry / concrete)
Very simple handling generates cost benefits
Can be combined with screw, dowel or weld assembly
Possible for door sizes up to CS 1350 x 2500 mm
(1-leaf) or CS 2500 x 2500 mm (2-leaf)

Frame back-filling – nothing could be easier!
Novoferm can provide you with pre-fabricated, approved and perfectly fitting moulded mineral wool sections for back-filling the frame variants listed on the right with mineral wool.

Back-filling	T30-doors*	T90-doors*	Multi- purpose doors*
Mineral wool back-filling	T30-1 N2/50 T30-2 N22/50	–	MZ 53-1 MZ 53-2

* not available for doors with burglar resistance or top panel/transom window

Our recommendation:
Combine the screw assembly method with mineral wool back-filling. Nothing could be easier!

Corner frame
for installation in masonry, concrete or foam mortar, with mineral wool back-filling.

Corner frame

Corner frame with add-on frame
consisting of corner frame and add-on frame, for installation in masonry or concrete, with mineral wool back-filling.