b'Structural H Mulls1. Begin by removing the sashes andany foam insulation, jamb adjustersby backing out the screw for theadjuster.2. Cut a piece of plywood, exteriorgrade preferably, to fasten to one win-dow jamb. Take care to align to thetop and bottom. Secure with three#8x1/2 Philips Head Pan Screws.Repeat this step on the other window.3. Apply a bead of caulk sealantalong the interior edges of the HMullion legs.4. Place the H Mullion on to thejamb of the first windows and alignthe Mull with the top and bottom ofthe window.5. Nest the second window into theH Mullion and squeeze the windowstogether making the frames seatedcompletely into the Mull. Use a puttyknife to help slip the Mull over thetwo windows.6. Stand the assembly upright andcheck the alignment. If necessary usea rubber mallet to align.7. Starting with the upper installationholes, screw the windows into the HMullion using #8 x 1-5/8 Phips PanHead Screws.8. Repeat by anchoring through thelower installation hole. Do this withboth windows, angling both screws soas not to interfere with each other.9. Applying a Bedding Sealant, sealthe open cavities completely on bothends of the H Mullion so there areno voids where water can penetrate.10. Place two metal straps along thetop of the Mulled Unit and use#8x1/2 Philips Pan Head Screws tosecure the straps. Repeat on bottomof the Mulled Unit.11. Re-install the upper and lowersash of each window. If a HeadExpander and Sill Angle are needed,they can span both windows.Window Fitters Guide to Window Installation792020 AWDI, LLC Do not reproduce without permission'