What do transfer grilles do?

Table of Contents

A transfer grille is a grille or register installed in the wall or above the door to connect the closed room with an open space such as a hallway or living room, thereby providing an additional pathway for stale air to reach the centrally located return.

What is the difference between louvers and grilles?

A supply vent cover comes with a louver/damper to control air flow. These are only used for vents that supply air and are optional. A grille is a vent cover through which air is blown into or out of a room for circulation back to the central heating or cooling unit.

What is a door transfer grille?

Non-vision door transfer grilles are two piece grilles designed to be installed in doors or partitions. They allow free movement of air but allow no sight of one side from the other. They are supplied with an additional frame that affords a smart finished appearance on both sides.

What is an air transfer opening?

Smoke dampers are required in air-transfer openings (an opening designed to allow the movement of environmental air between two contiguous spaces) in smoke partitions and in air transfer openings and duct penetrations in smoke barriers.

What is a jump duct?

A jump duct is a short piece of insulated flex duct (typically 10-inch-diameter duct) installed in the attic and attached to ceiling registers in the closed room and a common space to provide a return air pathway between the two areas.

What are register vents?

Registers. Registers are the vents that control air flow into a room from heating and cooling systems. A louvered damper enables control of the air, which can be directed in at least one direction or, in some cases, up to as many as four, or diffused altogether.

How does an intumescent grille work?

In normal use the grille system allows air to be circulated freely throughout the building. The system is designed with intumescent grilles meaning that in a fire situation they swell when exposed to heat and provide a fire barrier to restrict the passage of hot gases.

What is a intumescent air vent?

Intumescent grilles are also known as air transfer grilles, door transfer grilles, transfer vent grilles, intumescent vents and fire vents. These grilles allow the free movement of air around a building without compromising the fire integrity of fire doors and walls.

What is a transfer Grill?

Transfer Grilles offer the largest free area possible with the option of a sight-proof or light-proof core. Transfer grilles are designed for use in doors and partitions to allow for smooth transfer of air between spaces. Such spaces include storage rooms and restrooms.

What is a 51dg door grill?

Nailor 51DG and 61DG Series Door Grilles are designed to be completely sight proof and unobtrusive in appearance. Available in either steel or aluminum construction with either single or double flange frame options. A fire-rated version is also available.