26" Wall Sleeve Dimensions Rust Swap & GE RAB26A Fit Guide Oahu

Standard window air conditioners (like LG LW1222IVSM) draw condenser cooling air in through left and right side louvers that must project freely outdoors past the window sash.

When someone shoves a side-louvered window AC inside an 8-to-16-inch thick concrete condo wall sleeve, the solid sleeve walls block those side vents — starving the condenser, spiking head pressure, and killing the compressor. True Built-In units (GE AJCQ08AWJ, AJCQ10AWJ, AJCQ12AXXWA) have solid sheet-metal sides and breathe 100% out the back.

• Deep wall sleeve (>7" wall thickness): Mandatory True Rear-Breathing GE AJCQ
• Flush exterior grille stays clean and compliant with Honolulu AOAO facade rules

In high-rises along Ala Moana, Kapiolani, Makiki, and Salt Lake, trade-wind salt spray mixes with condensate water inside 20-year-old steel wall sleeves. Once pinhole rust perforates the sleeve floor, water wicks silently into drywall below and stains your downstairs neighbor's ceiling.

When our technician slides out your old chassis over protective floor drop cloths, we inspect the sleeve seam, pitch angle, and exterior caulk bead — swapping in a fresh heavy-gauge galvanized GE RAB26A ($275) whenever structural rust is present.

• Heavy-gauge galvanized steel sleeve + rust-proof RAG13A aluminum grille
• Proper 1/4-bubble outward condensate slope prevents interior floor drips

Older Oahu buildings often house discontinued 26-inch GE J-Series, Hotpoint, Fedders A/B-sleeve, or Whirlpool built-in chassis. Good news: the industry-standard 26-inch x 15.625-inch GE RAB26A envelope matches the vast majority of Honolulu concrete cutouts.

Even if your existing sleeve is an older 26" metal box in sound condition, GE AJCQ models include multi-density foam baffle seals to create an airtight divider between intake and exhaust plenums.

• Text a photo of your current wall unit nameplate to (808) 488-1111
• Zero guesswork — we confirm exact H x W x D before dispatch

Honolulu Resident Managers and AOAO boards strictly prohibit units protruding dangerously over lanais or walkways and require exterior grilles to match building lines.

Because the GE AJCQ12AXXWA sits flush behind the RAG13A aluminum architectural grille and whispers at 48 dB with R-32 variable-speed inverter modulation, it satisfies strict condo house rules while slashing 115V HECO power draw.

• Insured Oahu Cooling Specialists • Est. 2005
• Clean floor drop cloths laid from threshold to wall sleeve