To be read with Preliminaries/General conditions.
TYPE(S) OF VENTILATOR SYSTEM

Manufacturer and reference:	Kenstack Ventilator, manufactured by 
McKenzie-Martin Limited
Eton Hill Works
Eton Hill Road
Radcliffe
Manchester
M26 2US
Tel: 0161-723 2234	
Fax: 0161-725 9531
www.mckenziemartin.co.uk
sales@mckenziemartin.co.uk
	
Description:	Roof mounted natural exhaust ventilator.

	Comprising of external body containing top canopy, drainage outlets, throat and base skirt assembly.

	Manufactured as complete units.

Units either provide permanent ventilation or are fitted with internal dampers to give controllable ventilation.

Materials & Finishes:		Mill finish 1.2mm aluminium alloy to BS EN 485.

		-or-

		Plastisol coated 0.7mm steel in a full range of colours.

		-or-

		PVDf coated 0.7mm steel in a full range of colours.

		-or-

		Aluminium alloy 1.2mm to BS EN 485 with a polyester powder paint finish (including Syntha Pulvin) in a wide choice of colours and gloss levels.

		-or-

		Galvanised 0.9mm steel with a polyester powder paint finish in a wide choice of colours and gloss levels.

		-or-

		Pre-coated units manufactured using a wide range of coated aluminium and steel substrates including HPS200 & Prisma, in a full range of colours.

Controls:		No Damper permanently venting.

		-or-

		Damper with nylon covered wire cable to clam cleat.

		-or-

		Damper with nylon covered wire cable to winch operator. 

		-or-
 
		Damper with pneumatic actuation.

		-or-
	
		Damper with electric actuation.

Accessories:		Bird guards – 1.2mm expanded aluminium alloy, diamond mesh size 12.35mm x 35.05mm.

		-or-

		Insect mesh – perforated expanded aluminium alloy, diamond mesh size 3.5mm x 2mm.

		-&/or-

		Security guards – 1.6mm stainless steel, square mesh sizes 5.8mm x 5.8mm. 
	
Technical Information:-		Aerodynamic coefficient of 0.24 to be used to check project suitability by the Project Mechanical Consultant.

Design:	All design details/specifications are to be approved by Architect/Agent before manufacture.