RGS frames

MCT Brattberg has been developing and supplying high-quality cable and pipe penetrations since the early 1950s. Basically the system consists of feed-through windows and filling material, tuned to the quantity and size of cables and pipes to be fed.
There are three main groups of windows:

Welding frames (type RGS): welding windows, rectangular, intended for welding into a steel wall
Round frames (type RGP): round windows, intended to be mounted in a suitable pipe or sleeve, or cold in concrete
Building frames (type RGB / RGG): building frames, rectangular, intended to collapse in concrete or to be placed on the wall afterwards
The different types of RGS frames are therefore intended for use in steel or aluminum walls and floors.

RGS frame types

The RGS frames are available in: stainless steel, stainless steel, primed steel and aluminum. There are different variants within the RGS frames group:
RGS frame : standard welding frames, intended for welding into a steel or aluminum wall or floor. RGSF frame : welding frame with flange, for welding on a wall over a somewhat larger (not exactly fitting) hole
RGSFB frame : RGS frame with flange and bolt holes, for bolting to a steel or aluminum wall or floor, in locations where welding is not permitted or poses a risk to the stability of the wall.
RGSC frame : an RGS frame with round corners, which reduces the risk of cracks in the wall. Designed for extra heavily loaded walls and floors. Matching rounded blocks and rounded end seals are available.
RGSO frame : RGS frame that can be opened on one side, for locations with existing cables.
RGSK frame : extra deep (120mm) RGS frame, intended for mounting on decks where stagnant water can occur (this increases the surface of the penetration relative to the deck)
RGSbtb frame : this is a double RGS window with a total depth of 200mm. The RGSbtb frame has been successfully tested against torch fires (jet fire). The RGSbtb frame is also used to test the specific window, on location, for pressure density.
RGSR frame : the RGSR frame has extra large round corners with a radius of 70 mm, as well as extra reinforcement walls, intended for mounting in walls and floors that are subject to very high pressure.

In addition to the different variants, all RGS windows are available in different sizes. The single RGS frames are available in four heights: RGS2, RGS4, RGS6 and RGS8. The internal height of the RGS is 100 mm, each successive size is roughly 60 mm higher. 40mm of the height is used as standard for a final seal, the remaining space can be filled with cables and blocks.

Multiple types are also available for all four heights. Horizontal expansion of the number of openings is indicated by an 'x' (an RGS6x4 has 4 openings of height 6 next to each other), vertical expansion of the number of openings is indicated by a '+' (an RGS6 + 6X3 has 2 openings of the format 6 on top of each other, and then 3 times next to each other, so in total 6 openings).