Contact Us

Use the form on the right to contact us.

You can edit the text in this area, and change where the contact form on the right submits to, by entering edit mode using the modes on the bottom right. 

Windmill House, Walsh Lane
Meriden, CV7 7JY
United Kingdom

01676 523063

We specialise in the Sale, Service, Installation and Repair of G-U, BKS & Ferco Products.

RWA Smoke & Ventilation

RWA / NSHEV & Eve­r­yday Ven­ti­la­tion Sys­tems

We all know that in eve­r­yday life fresh air is important in order to be able to con­cent­rate and remain fatigue-free when working and for general well-being. In the event of a fire, however, fast detec­tion and removal of smoke is essen­tial for survival. Find out how controlled ven­ti­la­tion can be imple­mented and how you can ensure that fresh air is supplied and smoke extracted where it counts.

Smoke and heat exhaust ven­ti­la­tion sys­tems (RWA)

Smoke and heat exhaust ven­ti­la­tion sys­tems are essen­tial for fire pro­tec­tion. In app­li­ca­tions where the reliable per­formance of a smoke exhaust installa­tion in the event of a fire is crucial and when fumes need to be removed quickly, smoke and heat exhaust ven­ti­la­tion sys­tems (RWA) from Gretsch­-Unitas ensure the reliable and automatic ope­ning of smoke extrac­tion apertures. They minimise the deve­lop­ment of smoke in escape and rescue routes, thus pro­tec­ting people from poi­so­ning due to smoke inha­la­tion and pro­perty from damage. In eve­r­yday ope­ra­tion, they ensure a controlled supply of fresh air.

Natural smoke and heat exhaust ven­ti­la­tion devices (NSHEV) in accor­dance with EN 12101-2

According to EN 12101-2, sys­tems are only approved for use on vertical facades if they have been tested and approved with all their compon­ents as a whole. Here you will find GU NSHEV system solu­tions with cer­ti­fied compon­ents for timber and aluminium pro­files with Euro-groove from all leading pro­file system suppliers and for all cust­omary window types.

24 V drives

RWA drives and RWA ope­ning sys­tems from GU gua­rantee fast and reliable smoke extrac­tion in the event of a fire and pro­vide natural eve­r­yday room ven­ti­la­tion. The GU range comprises chain drives, spindle drives, locking drives and combined ope­ning sys­tems.

Control cen­tres 24 V

RWA cen­tral control units from GU control the extrac­tion of smoke gases in the event of a fire as well as eve­r­yday room ven­ti­la­tion. They con­sist of compact or exten­dable modules with backup batte­ries gua­ran­te­eing at least 72 hours of ope­ra­tion during a power failure.

Ven­ti­la­tion sys­tems

GU offer cust­omised and comfor­table solu­tions for eve­r­yday room ven­ti­la­tion. Whe­ther for Tilt-Only or Top-Hung sashes, or pit­ched, tri­angular, round and seg­mental arch win­dows ope­ning inward or outward – GU ven­ti­la­tion sys­tems leave not­hing to be desired.


Chain drives from GU pro­vide a modern solu­tion for room ven­ti­la­tion. Thanks to their flat and compact design, they ide­ally harmo­nise with win­dows of any type and architectural style. Offe­ring a great number of face-fixed or concealed moun­ting vari­ants, they can be used on inward or outward-ope­ning Tilt-Only, Top-Hung, Turn-Only, Par­allel-Offset, and Pro­je­c­ting Top-Hung win­dows as well as on Horizontal or Vertical Pivot win­dows and sky­lights.

Click Here to view RWA Smoke & Ventilation Products in our shop.