Selecting the Proper Size StakWEL® Egress Window Well STEP 1: Measure and calculate dimension A as shown in the detail on the right based on the site's grade conditions and foundation height. STEP 2: Determine the required window well height by performing this simple calculation: Required Window Well Height l= Dimension A + 7-1/2" From the first column in the table below, select the closest height that will meet the site conditions. STEP 3: Once the height has been determined, read across and select the number of modules required for your site condition. StakWEL® STANDARD SIZES AND MODEL NUMBERS Modules Height Width Keyhole on Center Dimension Projection from Foundation Optional Dome Cover stkwl 1 module = 21" 54" 58" 40-1/4" stkwl-C stkwl 2 modules = 36-3/8" 54" 58" 40-1/4" stkwl-C stkwl 3 modules = 51-3/4" 54" 58" 40-1/4" stkwl-C stkwl 4 modules = 67-1/8" 54" 58" 40-1/4" stkwl-C stkwl 5 modules = 82-1/2" 54" 58" 40-1/4" stkwl-C stkwl 6 modules = 97-7/8" 54" 58" 40-1/4" stkwl-C Note: StakWEL Window Wells cannot be used with 60" wide windows StakWEL modules are designed for use on 36" and 48" windows only (See ScapeWEL model for 60" window installations). BILCO Egress Window Wells satisfy International Building Code requirements for Emergency Escape and Rescue Openings per section R310. 6/9/17
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