Fire-resistant and sound reducing wall hatch DOLLE EI45 WH is a unique wall hatch that can withstand fire for 45 minutes - EN 13501-2 and reduce sound with 29-31 dB - EN ISO 717-1.
The Fire- and sound "proof" wall hatch DOLLE EI45 has got a trapdoor that is insulated with 50 mm rockwool plate, which is made of non-combustible, moisture and water-repellent Rockwool stone wool. The wall hatch has a fantastic insulation and a unique construction that prevent loss of heat and draught, the u-value is calculated as a building component and complies with EN 14351-1: U-value 1,2 W/(m2K) – also see certificate. The wall hatch is also tested regarding airtightness according to EN 12207 – where it has reached the highest airtightness class - class 4.
The trapdoor is 56 mm thick and can be mounted as left or right hung, giving perfect flexibility. DOLLE EI45 WH comes with espagnolette lock, detachable handle and sealing strip. The casing is untreated pine. The wall hatch is mounted easily and simply according to the instructions in the supplied mounting instructions without the use of special tools. The wall hatch is FSC certified.
The new European fire requirements are described for wall hatches as:
1) E (integrity) ability to keep flames and gases out.
2) I (insulation) ability to keep warm out.
After the classification, the time period for which the wall hatch can withstand fire is indicated by EI45 so the fire-resistant wall hatch is fireproof for 45 minutes.
The wall hatch is available in 6 standard sizes and can be delivered also made to measure. The wall hatch can also be used as inspection door.