Passyfier Mk1 Sleeved Wall Vent Kits
	Order Code:	Features Include:
	PASS/MK1/T External Airbrick: Terracotta	Maximum water vapour transmission 2.3 litres per 24 hours Main tube length (open), 340mm Main tube length (closed), 240mm To fit 230mm x 155mm aperture, i.e. standard 225 x 150 mm (9" x 6") airbricks Internal grille always in white with built in fly screen. Instructions are included.
	PASS/MK1/B External Airbrick: Buff
	PASS/MK1/DG External Airbrick: Dark Grey
	PASS/MK1/RR External Airbrick: Rustic Red
	EXT Extension Sleeve	Available in white only. Each extension allows for an additional 112mm of wall thickness.
	WBC Wind Blast Cowl	Available in rustic brown only. To be used exposed/coastal locations

Recommendations:
1) Allow one vent per room with a maximum floor area not exceeding 20m2. 2) In an open plan living room allow for two vents opposite each other. 3) Use the compatible wind blast cowl with every vent in exposed or coastal locations. Use in conjunction with mechanical extraction in kitchens and bathrooms. 4) Kill any mould that exists on the floor, wall and ceiling surfaces with a good quality fugicidal wash before redecorating. 5) Install the Passyfier vent at a high level in retrofit and new-build applications if possible. 6) Use the Passyfier Sleeved Vent Kit where ever practical to maximise the transmission of water vapour.

Passyfier Mk2 Core Wall Vent Kits
	Order Code:	Features Include:
	PASS/MK2/B External Cowl: Brown	Maximum water vapour transmission 1 litre per 24 hours Main tube length (open), 400mm Main tube length (closed), 230mm Main tube diameter, 128mm Rustic brown front only Use 132mm diameter core bit drill Internal grille always in white with built in fly screen. Instructions are included.
	PASS/MK2/W External Cowl: White

Recommendations:
It is easier to fit the Passyfier Core Vent in existing clinker/concrete walls. However, it will be necessary to install two Passyfier Core Vents to achieve almost the same water vapour transmission as one Passyfier Sleeved Vent Kit.

Note:
Passyfier Vents are used to help control humidity and NOT to be used as a method of providing ventilation to any gas, oil, or solid fuel appliance. See our ArrestAir-Pro range for air combustion venting.