T2P 500x200 mm Double Deflection Wall Grille — The Linear Format

Double deflection, in brief

The T2P grille has two rows of individually adjustable blades, perpendicular to each other: the front row follows the 500 mm side, the rear row runs across it. The result — you aim the air jet in both planes, sideways and vertically.

Single deflection grilles have one row of blades and aim air in a single plane.

The rule designers use: width, not height

When sizing a grille, the simplest way to reduce air velocity — and with it noise and draught sensation — is to increase the free area. But area can be increased two ways, with very different visual results:

• Increasing height — the grille becomes an ever more visible rectangle on the wall
• Increasing width — the grille stays a discreet horizontal line

The 500x200 mm format is exactly this compromise: 25% more area than a 400x200 mm grille, at the same 200 mm height. Air leaves more slowly, the grille looks just as discreet.

On a wall, a long low grille reads as an architectural line, not a technical accessory — which is why architects prefer elongated formats, especially combined with painting in the wall colour.

Where the 500x200 mm format is used

• Above doors — the classic supply position in hotel rooms, offices, consulting rooms
• Below windows or in the parapet — where available height is limited
• Open-plan offices — supply along a long run, with moderate airflow per grille
• Waiting areas, receptions, corridors
• Retail spaces — shops, pharmacies, salons

Adjustment in practice

Blades are positioned individually, by hand, after commissioning — when you can see how the air actually behaves, not how it was drawn.

• In cooling, cold air is denser and falls by itself; aim the jet horizontally or slightly upwards for mixing
• In heating, warm air rises and stratifies under the ceiling; aim the blades downwards to push heat into the occupied zone

On grilles above doors, with people passing underneath, lateral adjustment matters just as much: the jet can be deflected towards the centre of the room instead of blowing straight down the doorway.

Construction

Anodised aluminium — the oxide layer protects the metal against corrosion, does not flake and withstands repeated cleaning. Maintain with a soft cloth, without solvents or abrasives.

Electrostatic RAL painting to order — particularly useful on linear formats, where the grille can be made to disappear entirely into the wall colour.

Specifications

FAQ

500x200 or 400x200 — which one? Same height, but 500x200 has 25% more free area. At the same airflow, air leaves more slowly — less noise and less draught sensation. If the wall allows the length, choose the longer format; the price difference is small compared with the comfort gained.

Can it be fitted above a door? Yes, this is one of the typical positions for this format. Set the blades laterally so the jet does not blow straight down the doorway, over people entering.

Can I control airflow as well as direction? Not from the blades. For airflow, order the T2P-D version with an integrated damper, or fit a separate damper behind the grille.

Are the blades fixed at 45°? No — they are individually adjustable to any position. The fixed 45° angle belongs to exterior grilles and ceiling diffusers, not to deflection wall grilles.

📞 +40 722 667 239 — free advice on size and type for your project 💬 WhatsApp — send your wall layout for a same-day recommendation