Plenums for Linear Slot Diffusers

Series ALSxPL Matching Plenums for Airvector® Linear Slot Diffusers (ALSx7) and Returns (ALSx0). Offered in two models (compact or high) in steel or aluminum, with or without insulation.

Plenums in Steel

ALS1PL   Compact Plenum for 1″ Slot Diffusers

ALS2PL   Compact Plenum for 1/2″ Slot Diffusers

ALS3PL   Compact Plenum for 3/4″ Slot Diffusers

ALS4PL   Compact Plenum for 1 1/4″ Slot Diffusers

ALS5PL   Compact Plenum for 1 1/2″ Slot Diffusers

ALS1PLH   High Plenum for 1″ Slot Diffusers

ALS2PLH   High Plenum for 1/2″ Slot Diffusers

ALS3PLH   High Plenum for 3/4″ Slot Diffusers

ALS4PLH   High Plenum for 1 1/4″ Slot Diffusers

ALS5PLH   High Plenum for 1 1/2″ Slot Diffusers

ALS1PLIN   Insulated Compact Plenum for 1″ Slot Diffusers

ALS2PLIN   Insulated Compact Plenum for 1/2″ Slot Diffusers

ALS3PLIN   Insulated Compact Plenum for 3/4″ Slot Diffusers

ALS4PLIN   Insulated Compact Plenum for 1 1/4″ Slot Diffusers

ALS5PLIN   Insulated Compact Plenum for 1 1/2″ Slot Diffusers

ALS1PLHIN   Insulated High Plenum for 1″ Slot Diffusers

ALS2PLHIN   Insulated High Plenum for 1/2″ Slot Diffusers

ALS3PLHIN   Insulated High Plenum for 3/4″ Slot Diffusers

ALS4PLHIN   Insulated High Plenum for 1 1/4″ Slot Diffusers

ALS5PLHIN   Insulated High Plenum for 1 1/2″ Slot Diffusers

Accessories

Plenums in Alluminum

ALS1APL   Compact Plenum for 1″ Slot Diffusers

ALS2APL   Compact Plenum for 1/2″ Slot Diffusers

ALS3APL   Compact Plenum for 3/4″ Slot Diffusers

ALS4APL   Compact Plenum for 1 1/4″ Slot Diffusers

ALS5APL   Compact Plenum for 1 1/2″ Slot Diffusers

ALS1APLH   High Plenum for 1″ Slot Diffusers

ALS2APLH   High Plenum for 1/2″ Slot Diffusers

ALS3APLH   High Plenum for 3/4″ Slot Diffusers

ALS4APLH   High Plenum for 1 1/4″ Slot Diffusers

ALS5APLH   High Plenum for 1 1/2″ Slot Diffusers

ALS1APLIN   Insulated Compact Plenum for 1″ Slot Diffusers

ALS2APLIN   Insulated Compact Plenum for 1/2″ Slot Diffusers

ALS3APLIN   Insulated Compact Plenum for 3/4″ Slot Diffusers

ALS4APLIN   Insulated Compact Plenum for 1 1/4″ Slot Diffusers

ALS5APLIN   Insulated Compact Plenum for 1 1/2″ Slot Diffusers

ALS1APLHIN   Insulated High Plenum for 1″ Slot Diffusers

ALS2APLHIN   Insulated High Plenum for 1/2″ Slot Diffusers

ALS3APLHIN   Insulated High Plenum for 3/4″ Slot Diffusers

ALS4APLHIN   Insulated High Plenum for 1 1/4″ Slot Diffusers

ALS5APLHIN   Insulated High Plenum for 1 1/2″ Slot Diffusers

Accessories

ALS1PL   Compact Plenum for 1″ Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS2PL   Compact Plenum for 1/2″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS2PL   Compact Plenum for 1/2″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS3PL   Compact Plenum for 3/4″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS4PL   Compact Plenum for 1 1/4″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS5PL   Compact Plenum for 1 1/2″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS1PLH   High Plenum for 1″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS2PLH   High Plenum for 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS3PLH   High Plenum for 3/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS4PLH   High Plenum for 1 1/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS5PLH   High Plenum for 1 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS1PLIN   Insulated Compact Plenum for 1″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS2PLIN   Insulated Compact Plenum for 1/2″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS3PLIN   Insulated Compact Plenum for 3/4″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS4PLIN   Insulated Compact Plenum for 1 1/4″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS5PLIN   Insulated Compact Plenum for 1 1/2″ Slot Diffusers

• Compact Design (8″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS1PLHIN   Insulated High Plenum for 1″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS2PLHIN   Insulated High Plenum for 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS3PLHIN   Insulated High Plenum for 3/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS4PLHIN   Insulated High Plenum for 1 1/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS5PLHIN   Insulated High Plenum for 1 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS1APL   Compact Plenum for 1” Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS2APL   Compact Plenum for 1/2” Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS3APL   Compact Plenum for 3/4” Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS4APL   Compact Plenum for 1 1/4” Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS5APL   Compact Plenum for 1 1/2” Slot Diffusers

• Compact Design (8” Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS1APLH   High Plenum for 1” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS2APLH   High Plenum for 1/2” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS3APLH   High Plenum for 3/4” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS4APLH   High Plenum for 1 1/4” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS5APLH   High Plenum for 1 1/2” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck

ALS1APLHIN   Insulated High Plenum for 1” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS2APLHIN   Insulated High Plenum for 1/2” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS3APLHIN   Insulated High Plenum for 3/4” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS4APLHIN   Insulated High Plenum for 1 1/4” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS5APLHIN   Insulated High Plenum for 1 1/2” Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS1PLHIN   Insulated High Plenum for 1″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS2PLHIN   Insulated High Plenum for 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS3PLHIN   Insulated High Plenum for 3/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS4PLHIN   Insulated High Plenum for 1 1/4″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner

ALS5PLHIN   Insulated High Plenum for 1 1/2″ Slot Diffusers

• Higher Design (11″ Height)
• Available with 4”, 5”, 6”, 8” round neck
• Available with 8”, 10”, 12” and 14” oval neck
• 1/2″ Insulation Liner